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March 4, 2015

March 4, 2015

Posted by **Kelly** on Thursday, January 20, 2011 at 1:57am.

Can you help me find the average rate of change of the function over the given interval?

- calculus -
**Damon**, Thursday, January 20, 2011 at 6:11amThere is no rate of change of the number 2

Graph cos t from 0 to pi

1 at t = 0

0 at t = pi/2

-1 at t = pi

so it drops

now the average rate of change is the function at pi - the function at t all divided by the time, pi

function at pi = -1

function at 0 = +1

(-1 - 1 )/pi = -2/pi

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