Exercise 3. Use the properties of definite integral in the following: a) If f f(x)dx = 12, and f(x)dx = 3.6, find f(x)dx. %3D b) If f(x)dx = 37, and g(x)dx = 16, find 1 | [2f(x) + 3g(x)]dx.

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A: I am attaching image so that you understand each and every step.

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