What is the integral of cos(m)x ?

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

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integral of cos(m)x

\int cos (m) x d x

\frac{1}{2} x^{2} cos (m) + C

Solution steps

\int cos (m) x d x

Take the constant out:

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

= cos (m) \cdot \int x d x

Apply the Power Rule

= cos (m) \frac{x ^{2}}{2}

Simplify

cos (m) \frac{x ^{2}}{2} : \frac{1}{2} x^{2} cos (m)

= \frac{1}{2} x^{2} cos (m)

Add a constant to the solution

= \frac{1}{2} x^{2} cos (m) + C