Question: 3. (a) (3 marks) Evaluate the indefinite integral / 2Varctan(3x) dx. 1 + 9x2 (b) (4 marks) Suppose we know that (3f(x) -2) de =

3. (a) (3 marks) Evaluate the indefinite integral / 2Varctan(3x) dx. 1 + 9x2 (b) (4 marks) Suppose we know that (3f(x) -2) de = 6 and that rf(x?) dx =8. Use this information and properties of integrals to find the value of / f(x) dx

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