What is the integral of sin(2x)-sin(x) ?

The integral of sin(2x)-sin(x) is -1/2 cos(2x)+cos(x)+C

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integral of sin(2x)-sin(x)

\int sin (2 x) - sin (x) d x

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

Solution steps

\int sin (2 x) - sin (x) d x

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \int sin (2 x) d x - \int sin (x) d x

\int sin (2 x) d x = - \frac{1}{2} cos (2 x)

\int sin (x) d x = - cos (x)

= - \frac{1}{2} cos (2 x) - (- cos (x))

Simplify

= - \frac{1}{2} cos (2 x) + cos (x)

Add a constant to the solution

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

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