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acrylic rod b&q Texas Instruments TI-89 Titanium Graphing Calculator (packaging may vary) how to choose
acrylic rod b&q Texas Instruments TI-89 Titanium Graphing Calculator (packaging may vary) how to choose

acrylic rod b&q Texas Instruments TI-89 Titanium Graphing Calculator (packaging may vary) how to choose

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What is acrylic rod b&q Texas Instruments TI-89 Titanium Graphing Calculator (packaging may vary) how to choose?


      It works like it is supposed acrylic rod b&q to. No issues.I acrylic rod b&q did not use it for insane math stuff so I cannot comment on its intricate acrylic rod b&q features. But at the basic acrylic rod b&q level, it is great.Backed by acrylic rod b&q 1-year warrantyGraphing acrylic rod b&q calculator acrylic rod b&q handles calculus, algebra, acrylic rod b&q matrices, acrylic rod b&q and statistical functionsThere isn't acrylic rod b&q alot I can say about acrylic rod b&q this calculator which hasn't been discussed by previous reviewers. I, like acrylic rod b&q the acrylic rod b&q majority of them, acrylic rod b&q and probably acrylic rod b&q you the reader, have an 83 and got into a calculus course, or calculus-intensive course, acrylic rod b&q and realized that the acrylic rod b&q 83 was no acrylic rod b&q longer going to cut it. Well I got the 89 from amazon and since that day the 83 began to look more acrylic rod b&q and more primitive...sigh...The 89 acrylic rod b&q can acrylic rod b&q factor, acrylic rod b&q differentiate, integrate, sum, products, binomials, solve systems acrylic rod b&q and matrix operations, etc. It can also graph in 3d, acrylic rod b&q polar, or differential acrylic rod b&q field (what you acrylic rod b&q may have seen acrylic rod b&q in the acrylic rod b&q promo shots). It even has the option of exact or acrylic rod b&q approximate answers. acrylic rod b&q A very helpful option I've found is the stored units of measurement you can use in the cases where acrylic rod b&q you need acrylic rod b&q to acrylic rod b&q work problems acrylic rod b&q in physics, engineering or even acrylic rod b&q chemistry. acrylic rod b&q After about two months acrylic rod b&q of acrylic rod b&q use I'm acrylic rod b&q still learning just how much this graphic utility acrylic rod b&q has acrylic rod b&q to acrylic rod b&q offer, but acrylic rod b&q the user-interface acrylic rod b&q has acrylic rod b&q long acrylic rod b&q since become completely intuitive for acrylic rod b&q me. But the buyer should beware if they are acrylic rod b&q making the transition to this right before the final--its acrylic rod b&q menu style interface takes a day or so to acrylic rod b&q get used to, and the acrylic rod b&q manual acrylic rod b&q while acrylic rod b&q long isn't as comprehensive or as clear as it acrylic rod b&q could be, relying heavily on acrylic rod b&q abbreviations. Perhaps the most frustrating thing to learn is the exact sequence acrylic rod b&q various acrylic rod b&q commands need to be entered in, acrylic rod b&q in order to get acrylic rod b&q to the graphing utility to something other than say TOO acrylic rod b&q FEW ARGUMENTS or acrylic rod b&q SYNTAX ERROR. (Using the onboard catalog of acrylic rod b&q functions, gives acrylic rod b&q you an entry guide at acrylic rod b&q the bottom of the screen.)What acrylic rod b&q I didn't acrylic rod b&q expect to use, but find very useful acrylic rod b&q is the USB cable and software acrylic rod b&q which allows me to upload screen shots, ie graphs, acrylic rod b&q which I can then attach for homework and lab assignments when I acrylic rod b&q dont have access acrylic rod b&q to acrylic rod b&q either Derive, acrylic rod b&q Excel, or acrylic rod b&q my mac's Grapher. It is also possible to acrylic rod b&q download additional programs acrylic rod b&q and apps acrylic rod b&q but I acrylic rod b&q can't see me, or most acrylic rod b&q of the potential buyers, of this utility actually needing to do acrylic rod b&q this. acrylic rod b&q It can be programmed as acrylic rod b&q well, acrylic rod b&q but again acrylic rod b&q I have acrylic rod b&q hard time imagining when the need to do acrylic rod b&q this would acrylic rod b&q actually arise.This acrylic rod b&q graphing utiltity is a little acrylic rod b&q larger than the 83-85 line acrylic rod b&q (already bordering on acrylic rod b&q the cartoonish) but it is significantly smaller than the 92 (with which it shares the acrylic rod b&q exact same Derive acrylic rod b&q software and which has a full-qwerty keyboard.) However, this is an acrylic rod b&q altogether acrylic rod b&q much more acrylic rod b&q powerful device than acrylic rod b&q the 83 and an equal to the more cumbersome 92. acrylic rod b&q So its a good compromise.One acrylic rod b&q small question acrylic rod b&q in the back of my mind is acrylic rod b&q that with acrylic rod b&q the advances in LCD screens particularly in cellphones why isn't possible to give this utility a better screen If a device can be acrylic rod b&q built which relays phone and acrylic rod b&q text messages, has a 2mp camera, can stream acrylic rod b&q video, has acrylic rod b&q an MP3 player on acrylic rod b&q it, and a backlit color screen capable of video playback, all in a space volumetrically equivalent to my wallet acrylic rod b&q it seems like the acrylic rod b&q 89, computing power and all, could be built significantly smaller and with acrylic rod b&q a much acrylic rod b&q nicer display. acrylic rod b&q I realize that the market for graphing utilities acrylic rod b&q is no where near as acrylic rod b&q competitive acrylic rod b&q nor as profit tempting to justify enormous acrylic rod b&q outlays in r/d for enhancements, but acrylic rod b&q you would think some of the technology could acrylic rod b&q be licensed by acrylic rod b&q TI for use in their future utilities. In acrylic rod b&q a world of $200 textbooks an additional $50 or so acrylic rod b&q for a tool like this is pretty insignificant. It's not too hard to imagine this thing acrylic rod b&q having at least acrylic rod b&q a backlit LCD, finer resolution (the 3d graphs are borderline useless), and a rechargeable battery.As acrylic rod b&q futuristic as this utility is compared acrylic rod b&q to earlier ones, a quick comparison with my cell phone acrylic rod b&q or my iPod, acrylic rod b&q already acrylic rod b&q nearly 3yr old, and acrylic rod b&q the contrast acrylic rod b&q looks acrylic rod b&q like technology from acrylic rod b&q two different century's. Well, I suppose they are in fact...The utility, like all other TI, acrylic rod b&q utilities acrylic rod b&q is surprisingly acrylic rod b&q well-built--the acrylic rod b&q durability of these is acrylic rod b&q a credit to TI, acrylic rod b&q who with acrylic rod b&q a market consisting acrylic rod b&q entirely of lucrative acrylic rod b&q bulk school acrylic rod b&q contracts and parents supply-shopping for often careless acrylic rod b&q students, acrylic rod b&q could like textbooks publishers make them acrylic rod b&q as cheaply as possible. I've only seen one acrylic rod b&q of these acrylic rod b&q 89 broken and it was only acrylic rod b&q part of the acrylic rod b&q screen: they are made impressively acrylic rod b&q tough.This rant of mine acrylic rod b&q notwithstanding, as graphing acrylic rod b&q utilities go the acrylic rod b&q 89 is great; acrylic rod b&q although I haven't acrylic rod b&q used the Hewlett-Packards, acrylic rod b&q I can acrylic rod b&q say that the acrylic rod b&q 89 is the standard I've encountered for all undergrad math and science courses. If you're intending acrylic rod b&q to take acrylic rod b&q advances courses in any of the acrylic rod b&q latter you will probably have to buy one of acrylic rod b&q these eventually; accepting acrylic rod b&q the inevitable acrylic rod b&q early you might as well become familiar with it acrylic rod b&q as soon as acrylic rod b&q possible.The acrylic rod b&q batteries that came with the acrylic rod b&q calculator dont work. acrylic rod b&q So I replaced acrylic rod b&q them acrylic rod b&q for acrylic rod b&q new ones and the calculator worked just fine. The screen however is darker acrylic rod b&q than I like, but its not acrylic rod b&q a big problem. acrylic rod b&q I returned the item (swapped out the new batteries with the ones it came with so it can be in original condition) since I only needed it for an examLarge 100 x 160 acrylic rod b&q pixel display for split-screen acrylic rod b&q views. Compatible with acrylic rod b&q CBL 2 system, acrylic rod b&q CBR 2 motion acrylic rod b&q sensor, vernier easylink and vernier acrylic rod b&q easytemp systems to allow collection and acrylic rod b&q analysis of real-world dataUSB on-the-go acrylic rod b&q technology for file sharing with other calculators and acrylic rod b&q connecting with PCs. Matrix operations including acrylic rod b&q inverse, acrylic rod b&q determinant, acrylic rod b&q transpose, augment, elementary row operations and reduced row echelon form; matrix elements can be acrylic rod b&q real or acrylic rod b&q complex and numeric or symbolicI bought the acrylic rod b&q TI-89 acrylic rod b&q Titanium to be compatible with acrylic rod b&q a acrylic rod b&q fellow engineer--it acrylic rod b&q is great acrylic rod b&q to acrylic rod b&q be able to share acrylic rod b&q code and math solutions for the same model of acrylic rod b&q calculator. This is a acrylic rod b&q switch for me, since I have acrylic rod b&q always been a acrylic rod b&q Hewlett-Packard fan. I have at least one of almost every model of HP graphing acrylic rod b&q calculator, and many other acrylic rod b&q models, going acrylic rod b&q all the acrylic rod b&q way back to 1972 and acrylic rod b&q the HP 35. It never occurred to me that acrylic rod b&q the TI-89 series could actually be competitive with HP. Well, it is! This calculator has some very nice acrylic rod b&q features, and acrylic rod b&q a few features that the similarly acrylic rod b&q capable HP 49G does not. acrylic rod b&q I'll leave it to the buyer to explore the manuals and figure acrylic rod b&q some of that acrylic rod b&q out for themselves. But I acrylic rod b&q will definitely note that acrylic rod b&q the acrylic rod b&q Home screen edit/command line has superior behavior in several acrylic rod b&q ways to the HP acrylic rod b&q 49G. One of those is the retention acrylic rod b&q of the last problem, equation or expression entered by the acrylic rod b&q user. That means you can simply acrylic rod b&q solve the first problem, then move the cursor acrylic rod b&q around acrylic rod b&q in the problem, acrylic rod b&q replace a variable, acrylic rod b&q change a sign, or make any acrylic rod b&q other acrylic rod b&q edit needed to evaluate the problem acrylic rod b&q in different ways, without having to copy the acrylic rod b&q equation/expression from the history (as you would have to do with the HP 49G).The HP 49G has more memory than the TI-89 acrylic rod b&q Titanium (mine is acrylic rod b&q a HW4 acrylic rod b&q edition), and a more feature-rich file system (more like a PC). acrylic rod b&q TI acrylic rod b&q partially compensates for simpler acrylic rod b&q filesystem by acrylic rod b&q having apps show only files appropriate for the app you are acrylic rod b&q using at acrylic rod b&q the time, which helps acrylic rod b&q avoid visual clutter. The TI-89 Titanium has a lot of acrylic rod b&q useful, very high quality acrylic rod b&q apps, preinstalled.Both models have a acrylic rod b&q CAS acrylic rod b&q and acrylic rod b&q about 800 acrylic rod b&q scientific acrylic rod b&q functions, constants, and unit conversions but, acrylic rod b&q while unit conversions are faster acrylic rod b&q and easier acrylic rod b&q on the HP 49G, unit math is better on the TI 89 Titanium if what you expect the calculator to acrylic rod b&q do is simplify units to the most practical SI or SAE unit. As acrylic rod b&q an example, if you multiply acrylic rod b&q 200,000_Pa by 1_l, the acrylic rod b&q simple answer is 200e3_Pa*l, but the acrylic rod b&q most practical SI unit resulting from acrylic rod b&q that product is the acrylic rod b&q Joule. The acrylic rod b&q TI-89 acrylic rod b&q Titanium acrylic rod b&q correctly acrylic rod b&q substitutes units and acrylic rod b&q answers acrylic rod b&q with acrylic rod b&q 200e3_J, acrylic rod b&q while the HP 49G (and later RPL graphers) renders acrylic rod b&q the easiest, but least helpful, acrylic rod b&q answer of 200_kPa*l--the acrylic rod b&q correct acrylic rod b&q answer, but left in inconvenient units. acrylic rod b&q (The 49G does have the advantage of acrylic rod b&q having metric/engineering power-of-3 prefixes, acrylic rod b&q such as k, M, G, m, n, etc.)In a way, the acrylic rod b&q TI-89 series is acrylic rod b&q as much a acrylic rod b&q personal digital acrylic rod b&q assistant (PDA) as it is a graphing acrylic rod b&q calculator. This is the result of having numerous acrylic rod b&q useful record-keeping applications, acrylic rod b&q a clock/calendar, event scheduler, task acrylic rod b&q manager, personal contact database, etc. The Titanium also comes preloaded with EE*Pro, acrylic rod b&q a acrylic rod b&q professional-quality problem acrylic rod b&q solver app acrylic rod b&q aimed acrylic rod b&q primarily at electrical engineering acrylic rod b&q professionals. The acrylic rod b&q closest preloaded application HP shipped with a later acrylic rod b&q model of acrylic rod b&q the acrylic rod b&q 49G series, the acrylic rod b&q HP 50g, was a library of powerful acrylic rod b&q equations copied from acrylic rod b&q the HP 48G series, and an interactive Periodic Table of acrylic rod b&q the acrylic rod b&q Elements for chemistry. acrylic rod b&q Don't get me wrong, those acrylic rod b&q are acrylic rod b&q very acrylic rod b&q useful, and the Periodic Table app is better than ones acrylic rod b&q I've seen for acrylic rod b&q TI. But, the TI-89 series was marketed acrylic rod b&q to students acrylic rod b&q and professionals alike as acrylic rod b&q more than acrylic rod b&q just a graphing acrylic rod b&q calculator with a CAS. acrylic rod b&q It acrylic rod b&q is a acrylic rod b&q PDA. In 2020, that seems acrylic rod b&q a silly point to acrylic rod b&q make, given smartphones acrylic rod b&q of today. But in 1999, when both the acrylic rod b&q HP 49G and acrylic rod b&q the acrylic rod b&q TI-89 series were acrylic rod b&q made, the TI appears to have acrylic rod b&q been a better acrylic rod b&q fit for students and, depending on the disciplines, maybe better for engineers. In most respects, the I prefer the HP, acrylic rod b&q but some features of acrylic rod b&q the TI acrylic rod b&q are acrylic rod b&q eye-opening ideas acrylic rod b&q that acrylic rod b&q explain to me why TI is acrylic rod b&q still making acrylic rod b&q graphing calculators for the acrylic rod b&q US market today, while HP has fallen out of the business in the US, acrylic rod b&q even after acrylic rod b&q the acrylic rod b&q release of the formidable and capable HP Prime acrylic rod b&q (which is, acrylic rod b&q in acrylic rod b&q my opinion, acrylic rod b&q superior to the TI-Nspire acrylic rod b&q CX series). TI showed a acrylic rod b&q better design balance acrylic rod b&q with acrylic rod b&q the 89 acrylic rod b&q series, making the flagship graphing calculators fit either the student or the professional technical user, and most apps for acrylic rod b&q the acrylic rod b&q TI-89 series acrylic rod b&q are acrylic rod b&q of very high quality.One more acrylic rod b&q point I acrylic rod b&q will make, is that both are programmable; the TI-89 Titanium is natively programmable in acrylic rod b&q TI BASIC, while the HP 49G is natively acrylic rod b&q programmable acrylic rod b&q in HP Basic and in UserRPL. HP Basic (not acrylic rod b&q BASIC) is acrylic rod b&q limited acrylic rod b&q compared with TI's M68000 acrylic rod b&q BASIC, but HP RPL acrylic rod b&q is more powerful, more elegant, faster for most programs, and more efficient than TI's BASIC. acrylic rod b&q However, acrylic rod b&q TI BASIC is pretty intuitive, while RPL is considerably harder to learn if the user is not already familiar with Reverse Polish Notation acrylic rod b&q and acrylic rod b&q the HP stack or the Forth programming language (and its stack).Overall it is quite a toss up between the two. But if one were acrylic rod b&q to acrylic rod b&q ask me which brand to acrylic rod b&q go with today, acrylic rod b&q my acrylic rod b&q answer would acrylic rod b&q most probably be, "Go acrylic rod b&q with TI. Get acrylic rod b&q one of the acrylic rod b&q TI-Nspire CX models if you acrylic rod b&q are in high school acrylic rod b&q or acrylic rod b&q college and don't plan to use the acrylic rod b&q calculator in acrylic rod b&q a career, but get the TI-89 Titanium acrylic rod b&q if you plan acrylic rod b&q to keep using it beyond school and into acrylic rod b&q your career." I am pleased with the design, acrylic rod b&q speed, and ease acrylic rod b&q of learning acrylic rod b&q on the TI.188 KB RAM and 2.7 MB acrylic rod b&q flash memory for acrylic rod b&q speed; plenty of storage for functions, programs, data


      Texas Instruments TI-89 Titanium Graphing Calculator (packaging may differ)Graphing calculator handles calculus, algebra, matrices, acrylic rod b&q and statistical acrylic rod b&q functions188 acrylic rod b&q KB RAM acrylic rod b&q and 2.7 MB acrylic rod b&q flash memory acrylic rod b&q for speed; plenty of storage for functions, acrylic rod b&q programs, dataLarge 100 x 160 pixel acrylic rod b&q display for split-screen acrylic rod b&q views. Compatible with acrylic rod b&q CBL acrylic rod b&q 2 acrylic rod b&q system, CBR 2 acrylic rod b&q motion sensor, vernier easylink and vernier easytemp systems to allow collection and analysis of acrylic rod b&q real-world dataUSB on-the-go technology for file acrylic rod b&q sharing with other calculators and connecting with PCs. Matrix operations including inverse, determinant, transpose, augment, elementary row acrylic rod b&q operations acrylic rod b&q and acrylic rod b&q reduced row echelon acrylic rod b&q form; matrix acrylic rod b&q elements can be acrylic rod b&q real or complex and numeric or symbolicBacked by 1-year warranty



How to use Texas Instruments TI-89 Titanium Graphing Calculator (packaging may vary) ?

      acrylic rod b&q Texas Instruments TI-89 Titanium Graphing Calculator (packaging may vary) how to choose



Buyer's experience:


      1: I bought the TI-89 Titanium to be compatible with a fellow engineer--it is great to be able to share code and math solutions for the same model of calculator. This is a switch for me, since I have always been a Hewlett-Packard fan. I have at least one of almost every model of HP graphing calculator, and many other models, going all the way back to 1972 and the HP 35. It never occurred to me that the TI-89 series could actually be competitive with HP. Well, it is! This calculator has some very nice features, and a few features that the similarly capable HP 49G does not. I'll leave it to the buyer to explore the manuals and figure some of that out for themselves. But I will definitely note that the Home screen edit/command line has superior behavior in several ways to the HP 49G. One of those is the retention of the last problem, equation or expression entered by the user. That means you can simply solve the first problem, then move the cursor around in the problem, replace a variable, change a sign, or make any other edit needed to evaluate the problem in different ways, without having to copy the equation/expression from the history (as you would have to do with the HP 49G).The HP 49G has more memory than the TI-89 Titanium (mine is a HW4 edition), and a more feature-rich file system (more like a PC). TI partially compensates for simpler filesystem by having apps show only files appropriate for the app you are using at the time, which helps avoid visual clutter. The TI-89 Titanium has a lot of useful, very high quality apps, preinstalled.Both models have a CAS and about 800 scientific functions, constants, and unit conversions but, while unit conversions are faster and easier on the HP 49G, unit math is better on the TI 89 Titanium if what you expect the calculator to do is simplify units to the most practical SI or SAE unit. As an example, if you multiply 200,000_Pa by 1_l, the simple answer is 200e3_Pa*l, but the most practical SI unit resulting from that product is the Joule. The TI-89 Titanium correctly substitutes units and answers with 200e3_J, while the HP 49G (and later RPL graphers) renders the easiest, but least helpful, answer of 200_kPa*l--the correct answer, but left in inconvenient units. (The 49G does have the advantage of having metric/engineering power-of-3 prefixes, such as k, M, G, m, n, etc.)In a way, the TI-89 series is as much a personal digital assistant (PDA) as it is a graphing calculator. This is the result of having numerous useful record-keeping applications, a clock/calendar, event scheduler, task manager, personal contact database, etc. The Titanium also comes preloaded with EE*Pro, a professional-quality problem solver app aimed primarily at electrical engineering professionals. The closest preloaded application HP shipped with a later model of the 49G series, the HP 50g, was a library of powerful equations copied from the HP 48G series, and an interactive Periodic Table of the Elements for chemistry. Don't get me wrong, those are very useful, and the Periodic Table app is better than ones I've seen for TI. But, the TI-89 series was marketed to students and professionals alike as more than just a graphing calculator with a CAS. It is a PDA. In 2020, that seems a silly point to make, given smartphones of today. But in 1999, when both the HP 49G and the TI-89 series were made, the TI appears to have been a better fit for students and, depending on the disciplines, maybe better for engineers. In most respects, the I prefer the HP, but some features of the TI are eye-opening ideas that explain to me why TI is still making graphing calculators for the US market today, while HP has fallen out of the business in the US, even after the release of the formidable and capable HP Prime (which is, in my opinion, superior to the TI-Nspire CX series). TI showed a better design balance with the 89 series, making the flagship graphing calculators fit either the student or the professional technical user, and most apps for the TI-89 series are of very high quality.One more point I will make, is that both are programmable; the TI-89 Titanium is natively programmable in TI BASIC, while the HP 49G is natively programmable in HP Basic and in UserRPL. HP Basic (not BASIC) is limited compared with TI's M68000 BASIC, but HP RPL is more powerful, more elegant, faster for most programs, and more efficient than TI's BASIC. However, TI BASIC is pretty intuitive, while RPL is considerably harder to learn if the user is not already familiar with Reverse Polish Notation and the HP stack or the Forth programming language (and its stack).Overall it is quite a toss up between the two. But if one were to ask me which brand to go with today, my answer would most probably be, "Go with TI. Get one of the TI-Nspire CX models if you are in high school or college and don't plan to use the calculator in a career, but get the TI-89 Titanium if you plan to keep using it beyond school and into your career." I am pleased with the design, speed, and ease of learning on the TI.


      2: The batteries that came with the calculator dont work. So I replaced them for new ones and the calculator worked just fine. The screen however is darker than I like, but its not a big problem. I returned the item (swapped out the new batteries with the ones it came with so it can be in original condition) since I only needed it for an exam


      3: There isn't alot I can say about this calculator which hasn't been discussed by previous reviewers. I, like the majority of them, and probably you the reader, have an 83 and got into a calculus course, or calculus-intensive course, and realized that the 83 was no longer going to cut it. Well I got the 89 from amazon and since that day the 83 began to look more and more primitive...sigh...The 89 can factor, differentiate, integrate, sum, products, binomials, solve systems and matrix operations, etc. It can also graph in 3d, polar, or differential field (what you may have seen in the promo shots). It even has the option of exact or approximate answers. A very helpful option I've found is the stored units of measurement you can use in the cases where you need to work problems in physics, engineering or even chemistry. After about two months of use I'm still learning just how much this graphic utility has to offer, but the user-interface has long since become completely intuitive for me. But the buyer should beware if they are making the transition to this right before the final--its menu style interface takes a day or so to get used to, and the manual while long isn't as comprehensive or as clear as it could be, relying heavily on abbreviations. Perhaps the most frustrating thing to learn is the exact sequence various commands need to be entered in, in order to get to the graphing utility to something other than say TOO FEW ARGUMENTS or SYNTAX ERROR. (Using the onboard catalog of functions, gives you an entry guide at the bottom of the screen.)What I didn't expect to use, but find very useful is the USB cable and software which allows me to upload screen shots, ie graphs, which I can then attach for homework and lab assignments when I dont have access to either Derive, Excel, or my mac's Grapher. It is also possible to download additional programs and apps but I can't see me, or most of the potential buyers, of this utility actually needing to do this. It can be programmed as well, but again I have hard time imagining when the need to do this would actually arise.This graphing utiltity is a little larger than the 83-85 line (already bordering on the cartoonish) but it is significantly smaller than the 92 (with which it shares the exact same Derive software and which has a full-qwerty keyboard.) However, this is an altogether much more powerful device than the 83 and an equal to the more cumbersome 92. So its a good compromise.One small question in the back of my mind is that with the advances in LCD screens particularly in cellphones why isn't possible to give this utility a better screen If a device can be built which relays phone and text messages, has a 2mp camera, can stream video, has an MP3 player on it, and a backlit color screen capable of video playback, all in a space volumetrically equivalent to my wallet it seems like the 89, computing power and all, could be built significantly smaller and with a much nicer display. I realize that the market for graphing utilities is no where near as competitive nor as profit tempting to justify enormous outlays in r/d for enhancements, but you would think some of the technology could be licensed by TI for use in their future utilities. In a world of $200 textbooks an additional $50 or so for a tool like this is pretty insignificant. It's not too hard to imagine this thing having at least a backlit LCD, finer resolution (the 3d graphs are borderline useless), and a rechargeable battery.As futuristic as this utility is compared to earlier ones, a quick comparison with my cell phone or my iPod, already nearly 3yr old, and the contrast looks like technology from two different century's. Well, I suppose they are in fact...The utility, like all other TI, utilities is surprisingly well-built--the durability of these is a credit to TI, who with a market consisting entirely of lucrative bulk school contracts and parents supply-shopping for often careless students, could like textbooks publishers make them as cheaply as possible. I've only seen one of these 89 broken and it was only part of the screen: they are made impressively tough.This rant of mine notwithstanding, as graphing utilities go the 89 is great; although I haven't used the Hewlett-Packards, I can say that the 89 is the standard I've encountered for all undergrad math and science courses. If you're intending to take advances courses in any of the latter you will probably have to buy one of these eventually; accepting the inevitable early you might as well become familiar with it as soon as possible.


      4: It works like it is supposed to. No issues.I did not use it for insane math stuff so I cannot comment on its intricate features. But at the basic level, it is great.



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Bob
This is a beautiful stuff.
2021.03.06 12:00
Bob
This is a beautiful stuff.
2021.03.06 12:00
Bob
This is a beautiful stuff.
2021.03.06 12:00