Posted by **Jin** on Saturday, September 4, 2010 at 12:05am.

Consider the function

f(x)=–3x3–1x2+1x+1Find the average slope of this function on the interval (–2–1).

By the Mean Value Theorem, we know there exists a c in the open interval (–2–1) such that f(c) is equal to this mean slope. Find the value of c in the interval which works

I found the mean which is -17 but I can't get the C. I don't know what im doing wrong

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