What is the integral of cos(3)x^2 ?

The integral of cos(3)x^2 is 1/3 cos(3)x^3+C

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integral of cos(3)x^2

\int cos (3) x^{2} d x

\frac{1}{3} cos (3) x^{3} + C

Solution steps

\int cos (3) x^{2} d x

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= cos (3) \cdot \int x^{2} d x

Apply the Power Rule

: \frac{x ^{3}}{3}

= cos (3) \frac{x ^{3}}{3}

Simplify

cos (3) \frac{x ^{3}}{3} : \frac{1}{3} cos (3) x^{3}

= \frac{1}{3} cos (3) x^{3}

Add a constant to the solution

= \frac{1}{3} cos (3) x^{3} + C

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What is the integral of cos(3)x^2 ?
The integral of cos(3)x^2 is 1/3 cos(3)x^3+C