Discussion:  All Tools in Calculus on TI Calculator 
Topic:  average 
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Subject:  RE: average 
Author:  Craig 
Date:  Mar 12 2007 
> Is it possible to find the average value of a function over a
> certain interval on a TI 83?
Calculus would have you integrate over the interval, then divide by the length
of the interval. The TI83 can do this:
fnInt(Y1,x,lower,upper)/(upper  lower)
works, where the function is stored in Y1, and lower and upper are the endpoints
of the interval you're concerned with. fnInt is #9 under the Math menu.
 
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