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Teacher wants to trade calculators

J

jonmullen

Platinum Member
My teacher got a new ti-89 and does not like it, he is used to his ti-83 that got stolen. After helping him find some functions on it to day I made a crack about trading and he said ok. Well I am not going to trade till after the final as I am already really familiar with my 83 but afterwards is there any reason I should not trade. I an taking physics and pre-cal next year and physics II an AP calculus the year after that. Just looking for opinions
 
Go for the 89. It will be more useful in college.

If you ever need to take a test in HS that doesn't allow the 89 ( i can't think of any, but maybe teacher-specific), you can always borrow someones.

Thats a few hundred doller trade up there.
 
Whats something I can do with the 89 that I really could not with the 83...is there anything that works the other way
 
I'm a Physics major in college who took AP Physics, Calc, and a large variety of other classes for which a calcular is nice.

The TI-89 is MUCH, MUCH better than a TI-83+. No comparison.
 
.... nothing, the 89 pwns the 83. It's a few hundred upgrade. even if you don't like it, sell it and get another 83... the 89 can do 3d coord graphing, which is good for multivariable calculus.
 
Originally posted by: simms
.... nothing, the 89 pwns the 83. It's a few hundred upgrade. even if you don't like it, sell it and get another 83... the 89 can do 3d coord graphing, which is good for multivariable calculus.
Click to expand...

Not a few hundred, more like 70 more.
 
The SOLVE() feature is SO useful. You can put in something like 123x^23-x+(23+x)^9=15 into it and it will tell you the values of X. The INTEGRAL() and DERIVITIVE() features are also VERY useful when you're learning Calc and need a reminder. Don't get too dependent on them, though.
 
I'd take it in a heartbeat. The only issue is that you need to learn how to work around the menus, which is not a big deal once you learn them.
 
Originally posted by: oreagan
The SOLVE() feature is SO useful. You can put in something like 123x^23-x+(23+x)^9=15 into it and it will tell you the values of X. The INTEGRAL() and DERIVITIVE() features are also VERY useful when you're learning Calc and need a reminder. Don't get too dependent on them, though.
Click to expand...

The statement in bold cannot be emphasized enough. Quite a few colleges do not allow Ti89s in their calculus classes (alright to use em for HW purposes), and some even go to the extreme of not allowing any calculators at all. Make sure you know how to do basic Calculus by hand, and do not completely rely on the Ti89.

Also, you need to put a few hours into learning how to use it.

Besides that, the Ti89 is one hell of a calculator 🙂
 
Sometimes 89 is not allowed in college calc exams since they can basically integrate the whole thing for you on the spot.
But it doesn't really matter, some colleges don't even allow any graphing calculators in calc exams.
 
Yep as others have said, when I was in college they pretty much put a ban on the ti89s in physics, cal, etc...

So might want to find out if you can even use it. Worse case, sell it and buy another ti83 and pocket the cash 🙂
 
For the record, I'm glad I had my TI-89 during AP Calc, and I'm more glad that my teacher didn't let me use it very often. At UVA, I've just gone through Calc II and III without even touching my calculator - none were allowed, ever.

So, don't think that an 83 will be allowed much more than an 89 at a lot of universities.

For Physics or other a lot of other fields, an 89 will blow the 83 out of the water.
 
so which is better. i series or the HP series of calculators?

I have seen an engineer been proven wrong about his Ti by other engineers when it could not calculate a certain formula properly. I wish i remember what it was.
 
What's all this talk of a few hundred dollar upgrade? I got my TI89 for $99 at Costco 2 years ago, and I almost never see them listed at more than $140.
 
And, I've seen the 83+'s for $50 online... I even put up a poster for students so they could order them at that price.
 
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