9. a. b. Let f(x) = ln x and consider the interval [1,3]. Approximate the area under f(x) using left endpoints with 4 rectangles. Approximate the area under f(x) using right endpoints with 4 rectangles.

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Q: (1) Find the area enclosed by the two functions f(x)=x² – 1, and g(x) = -x4 + 1. %3D %3D

A:

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A:

Q: Find the area bounded by the graphs of f(x)=x+2, g(x)=3x²+5 , x=-1 and x=1.

A: Explanation of the answer is as follows