<p>I just husseled a guy with a TI-86. MSRP at Bestbuy: $114</p>
<p>My price: $10</p>
<p>I'm a hussalah. :)</p>
<p>You get used to it. Esp. when it has all these helpful functions like Solve... put a "." after a fraction to get a decimal.</p>
<p>I can only get log() from the catalog.</p>
<p>does anyone know where I can get a good price on an 89 titanium? I just lost mine, and I haven't told my parents yet, but since they bought it, I'll probably have to replace it...</p>
<p>
[quote]
I can only get log() from the catalog.
[/quote]
Just use ln (natural log).</p>
<p>ln()=log()
just type in ln()</p>
<p>Aw, you guys make me jealous. I'm still totin' around my bright green TI-83+! But it has pretty red and green apple stickers all over it, so... it must be infinitely cooler than all of yours :]</p>
<p>Does the clock/date in the upper right corner waste your batteries when your calculator is off? I feel like buying stickers to decorate my calculator. LOL.</p>
<p>ziggy will be here soon...</p>
<p>glucose, I'm talking about logs of different bases, not just base 10 and base e.</p>
<p>What kind of subjects would I need a ti89 calc? I currently have a 84+. Useful in college as well?</p>
<p>good question..because im wondering the same thing!!</p>
<p>It is necessary for Calculus, but even if you are in basic algebra (helps in Chem and Phys too), as long as you can use it during the test, you should have it. </p>
<p>This makes most of the SAT I Math section a joke. Taking any SAT/ACT without one is a major mistake (assuming you can afford it).</p>
<p>I can't say enough about how good and useful this calculator is, as long as you don't use it as a crutch.</p>
<p>I don't think it is necessary for Calculus, I used an 83+ up through Calculus II and it was more than enough, next year I am taking MVC though so I got the 89 titanium. I also wouldn't call it a "major mistake" to take the SAT without an 89, I got an 800 on the SAT reasoning and IIC math tests with the 83+. Anyway, back to my question, the manual says the calculator can do implicit differentiation and logs of different bases, anyone know how to do them?</p>
<p>No one said it was necessarily needed for Calc...I mean that's what everyone does at my school (83+). It's just a convenience. And if you're gonna get one later, might as well have gotten then. For the SAT I, you don't really even need a calculator.</p>
<p>ive seen it mentioned a few times that an 89 is good for the Math II subject test.....but how so? i ran out of time with about 10 questions left (granted, i couldnt answer all of them) and this is about the norm for me in practice tests and such. (how) is an 89 more efficient, faster, and easier than an 83+ or 84+?</p>
<p>the 89T will DEFINITELY increase your scores...</p>
<p>especially those f(x)/f(g(x)) ones.....</p>
<p>you still have to know how to do the math (and how to perform it on the calc)</p>
<p>One reason. Half of the problems on the test can be solved using F2 solve, F2 zeros, F3 limit, or F3 sigma in under 30 seconds. And, if they give you some random expression (like with trig) and ask you to simplify, you can just plug it in to your 89 and it will spit the answer right back out.</p>
<p>I use a regular 89, by the way. Not a Titanium.</p>
<p>Eh... My Calc class required a 89, and I really got used to it a month after starting to use it.</p>
<p>Calculation sucks and takes time. That's why the TI-89 is awesome, makes it a lot easier to get through the SAT's/ACT's.</p>
<p>Sure, you can get a 800 without it, but I simply do not see why you would want to, especially when you likely need/want one anyway for class.</p>
<p>Agreed lastchancexi...</p>
<p>Even though the SAT calculations are easy...at least you have a supertool right in front of you, just in case.</p>
<p>All of Texas Instruments calculators can be used on SAT I and II right?
like ti83,84,85,86,89/titanum,92 etc... right?</p>