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

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

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

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

2 sin (x) + C

Solution steps

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

Apply u-substitution

: \int \frac{1}{u} d u

= \int \frac{1}{u} d u

Apply the Power Rule

: 2 u^{\frac{1}{2}}

= 2 u^{\frac{1}{2}}

Substitute back

u = 1 - cos^{2} (x)

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

Simplify

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

= 2 sin (x)

Add a constant to the solution

= 2 sin (x) + C

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