What is the integral of (sin(2x))/((1-cos(2x))^3) ?

The integral of (sin(2x))/((1-cos(2x))^3) is -1/16 csc^4(x)+C

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integral of (sin(2x))/((1-cos(2x))^3)

\int \frac{sin ( 2 x )}{( 1 - cos ( 2 x ) ) ^{3}} d x

- \frac{1}{16} csc^{4} (x) + C

Solution steps

\int \frac{sin ( 2 x )}{( 1 - cos ( 2 x ) ) ^{3}} d x

Apply u-substitution

= \int \frac{1}{2 u ^{3}} d u

Take the constant out:

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

= \frac{1}{2} \cdot \int \frac{1}{u ^{3}} d u

Apply the Power Rule

= \frac{1}{2} (- \frac{1}{2 u ^{2}})

Substitute back

u = 1 - cos (2 x)

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

Simplify

\frac{1}{2} (- \frac{1}{2 ( 1 - cos ( 2 x ) ) ^{2}}) : - \frac{1}{16} csc^{4} (x)

= - \frac{1}{16} csc^{4} (x)

Add a constant to the solution

= - \frac{1}{16} csc^{4} (x) + C

What is the integral of (sin(2x))/((1-cos(2x))^3) ?
The integral of (sin(2x))/((1-cos(2x))^3) is -1/16 csc^4(x)+C