Solving TI-89 Exact/Approx Homework Problem

  • Context: Calculators 
  • Thread starter Thread starter muffintop
  • Start date Start date
  • Tags Tags
    Ti-89
Click For Summary
SUMMARY

The TI-89 calculator is designed to provide both exact and approximate results for derivatives. Users can switch between modes, but if a decimal is returned instead of an exact expression, it may be due to a variable value being stored. In this case, pressing the diamond button before ENTER in exact mode can yield a fraction. Clearing stored variables can resolve issues with unexpected outputs.

PREREQUISITES
  • Understanding of TI-89 calculator functions
  • Familiarity with calculus concepts, specifically derivatives
  • Knowledge of calculator modes: exact, approx, and auto
  • Ability to troubleshoot calculator settings and stored variables
NEXT STEPS
  • Learn how to effectively use the TI-89's exact mode for calculus problems
  • Research methods to clear stored variables on the TI-89
  • Explore advanced features of the TI-89 for symbolic computation
  • Study common pitfalls in using graphing calculators for calculus
USEFUL FOR

Students and educators in mathematics, particularly those using the TI-89 for calculus, as well as anyone troubleshooting calculator settings for accurate derivative calculations.

muffintop
Messages
13
Reaction score
0

Homework Statement


Recently got a ti-89 and when I use it to derive for example d(x^2+4x-10, x)
I get a decimal, 5.27 instead of getting 2x+4.


The Attempt at a Solution


I tried changing the mode to exact, approx, and auto. All give the same answer.
I tried pressing the diamond button before ENTER, only in the exact mode it gave me a fraction.
 
Computer science news on Phys.org
Press 2nd, F1 (to get to F6), then "Clear a-z".

Apparently, you have the value of .635 stored as x. :-p
 
Yay 2x+4!
Haha thanks.
 

Similar threads

Replies
4
Views
3K
  • · Replies 5 ·
Replies
5
Views
5K
  • · Replies 5 ·
Replies
5
Views
7K
  • · Replies 1 ·
Replies
1
Views
5K
  • · Replies 1 ·
Replies
1
Views
10K
  • · Replies 5 ·
Replies
5
Views
5K
  • · Replies 1 ·
Replies
1
Views
5K
  • · Replies 2 ·
Replies
2
Views
11K
  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 6 ·
Replies
6
Views
7K