Posted by **Kate** on Wednesday, January 25, 2012 at 1:41pm.

Let F(x)=int from 0 to x of (t-3)/(t^2+7) dt for -infinity <x< infinity.

a. Find the value of x where F attains its minimum value.

b. find the intervals over which F is only increasing or only decreasing.

c. Find open intervals over which F is only concave up or only concave down.

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