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Smile614
Posts: **1,530**Registered User Senior Member

Do you really need a TI-89 for Calculus?

I've been using a TI-83 for a long time so I'm really familiar with it.

But since i'll be taking Calculus for 2 years in high school (11,12 grade)

Is it worth getting??? (I mean it's like $150+ or something and what in the world am I gonna do with 2 calculators.)

How much will it help me on the AP exam, in class, SAT/SAT IIs, College classes..etc??

Since part of the AP exam is without a calculator. I want to do well in this class!

But the TI-89 can do some pretty cool things =]

I'm already a couple of months into the class and it's not too bad yet but once we get into harder stuff, maybe a more complex calculator will help?

Suggestions?

I've been using a TI-83 for a long time so I'm really familiar with it.

But since i'll be taking Calculus for 2 years in high school (11,12 grade)

Is it worth getting??? (I mean it's like $150+ or something and what in the world am I gonna do with 2 calculators.)

How much will it help me on the AP exam, in class, SAT/SAT IIs, College classes..etc??

Since part of the AP exam is without a calculator. I want to do well in this class!

But the TI-89 can do some pretty cool things =]

I'm already a couple of months into the class and it's not too bad yet but once we get into harder stuff, maybe a more complex calculator will help?

Suggestions?

Post edited by Smile614 on

## Replies to: CALCULATOR for Calculus??

810Registered User MemberCollege classes, that would depend on the college, but you can always find that out once you get there. Some college professors are still of the "no calculators ever" belief, while others encourage the use of graphing calculators.

1,530Registered User Senior MemberBut I've heard of people getting 5s on the AP exam using a TI-83.

That might be harder though?

810Registered User Membercannotdo by hand, or that it would be extremely time-consuming to do by hand (more so than simple factoring).Although, if the AP teacher is requiring a TI-89, it might be helpful to have one if the teacher is doing demonstrations.

1,530Registered User Senior MemberWe have a new teacher this year that just recommends it but doesn't require it. She doesn't know how to work it as well as some other teachers though so I'll be messing around with it for awhile myself to learn the basics. (Which I dont mind)

I'm just a couple of months into the class so I guess I'll wait and see how it goes and maybe get one by Thanksgiving/Christmas if necessary. Anything to help my AP/class scores! And since I'll be taking BC next year..it might come in handy I guess.

2,303Registered User Senior Member1,530Registered User Senior MemberI'm pretty familiar with the TI-83 since I've been using it since algebra I. But it seems like being able to solve integrals,derivatives on the TI-89 would come in pretty handy and allow you to use your time more efficiently on the AP exam..

810Registered User Member1,530Registered User Senior Member810Registered User MemberOn the TI-83 or TI-84, the derivative at a point is found using the nDeriv( command (under the [MATH] menu as option [8]). The format is nDeriv(function, variable, x-value).

Similarly, on the TI-83 or TI-84, a definite integral on a given interval can be found using fnInt (in the [MATH] menu as option [9]). The format is fnInt(function, variable, lower limit of integration, upper limit of integration).

Neither of these functions actually differentiates or integrates. In the case of nDeriv, the calculator performs a symmetric instantaneous rate of change function, while in the case of fnInt, the function uses Riemann sums to approximate the area under the curve.

1,530Registered User Senior MemberI had no idea a TI-83 could do so much. There's probably a lot more I don't know about my calculator then! haha. And I've had it since the 7th grade!