Question

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Answer 1

Refer the above image.

Answer 2

How to Integrate Compositions of Functions

Declare a variable u and substitute it into the integral:

Differentiate u = 4x + 1 and isolate the x term. This gives you the differential, du = 4dx.

Substitute du/4 for dx in the integral:

Evaluate the integral:

Substitute back 4x + 1 for u:

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