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

The integral of cos(2x)sin(3x) is 1/2 (-1/5 cos(5x)-cos(x))+C

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integral of cos(2x)sin(3x)

\int cos (2 x) sin (3 x) d x

\frac{1}{2} (- \frac{1}{5} cos (5 x) - cos (x)) + C

Solution steps

\int cos (2 x) sin (3 x) d x

Use the following identity:

cos (t) sin (s) = \frac{sin ( s + t ) + sin ( s - t )}{2}

= \int \frac{sin ( 3 x + 2 x ) + sin ( 3 x - 2 x )}{2} d x

Take the constant out:

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

= \frac{1}{2} \cdot \int sin (3 x + 2 x) + sin (3 x - 2 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

= \frac{1}{2} (\int sin (3 x + 2 x) d x + \int sin (3 x - 2 x) d x)

\int sin (3 x + 2 x) d x = - \frac{1}{5} cos (5 x)

\int sin (3 x - 2 x) d x = - cos (x)

= \frac{1}{2} (- \frac{1}{5} cos (5 x) - cos (x))

Add a constant to the solution

= \frac{1}{2} (- \frac{1}{5} cos (5 x) - cos (x)) + C

x^{\frac{1}{3}}, 8

\frac{d}{d x} (\frac{1}{x ^{2} - 2})

\frac{d}{d x} (x^{2} + \frac{128000}{x})

y = 4 - x^{2}, y = x^{2} - 4 x - 2

n = 2 \sum \infty \frac{3 ^{n}}{1 0 ^{n}}

What is the integral of cos(2x)sin(3x) ?
The integral of cos(2x)sin(3x) is 1/2 (-1/5 cos(5x)-cos(x))+C