Integral of sine squared X

Integral of sine squared X:

1) Integrate the function f(x) = 4sin 3x.

2) Integrate the function f(x) = sin (3x + 11).

3) Integrate the function f(x) = sin 3x + 3x²

Solutions:

1) - cos 3x + C

2) - cos (3x + 11) + C

3) - cos 3x + + C

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Graphing equations

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How to calculate Ratios