Consider the function ƒ : R → R defined by 1 if x #0 if x = 0. f(x) Is f Riemann integrable on [-1, 1]? Justify your answer rigorously using the definition of the Riemann integral.

Q: (b) Find upper and lower Riemann integrals of f on [-1,25]. (c) Is ƒ Riemann integrable?

A: Upper Riemann integral Lower Riemann integral is

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Q: Suppose that f(x) is continuous on [0, 9] and F(x) is an anti-derivative of f. If F(0)=9 and F(9)=3,…

A: We have to find

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