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September 1, 2014

September 1, 2014

Posted by **john** on Friday, March 16, 2012 at 8:37pm.

By the mean value theorem, we know there exists at least one c in the open interval (-4,4) such that f’(c) is equal to this mean slope. For this problem, there are 2 values of c that work. The smaller one and the larger one are?

- calculus -
**Reiny**, Friday, March 16, 2012 at 8:51pmf(-4) = 68

f(4) = 28

average slope = (28-68)/(4+4) = -5

f'(x) = 6x-5

f'(c) = 6c - 5 = -5

c = 0

I only get one value.

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