For each of the following, compute U(f, P), L(f, P), and WhereFind out whether the lower s...

For each of the following, compute U(f, P), L(f, P), and

Where

Find out whether the lower sum or the upper sum is a better approximation to the integral. Graph f and explain why this is so.

a) f (x) = x3

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b) f (x) = 3 − x2

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c) f (x) = sin(x/5)