Ti-89 exact/approx

  • Calculators
  • Thread starter muffintop
  • Start date
  • #1
14
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.
 

Answers and Replies

  • #2
75
0
Press 2nd, F1 (to get to F6), then "Clear a-z".

Apparently, you have the value of .635 stored as x. :tongue2:
 
  • #3
14
0
Yay 2x+4!
Haha thanks.
 

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