What is the integral of sin^4(x/6)cos(x/6) ?

The integral of sin^4(x/6)cos(x/6) is 6/5 sin^5(x/6)+C

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integral of sin^4(x/6)cos(x/6)

\int sin^{4} (\frac{x}{6}) cos (\frac{x}{6}) d x

\frac{6}{5} sin^{5} (\frac{x}{6}) + C

Solution steps

\int sin^{4} (\frac{x}{6}) cos (\frac{x}{6}) d x

Apply u-substitution

: \int sin^{4} (u) cos (u) \cdot 6 d u

= \int sin^{4} (u) cos (u) \cdot 6 d u

Take the constant out:

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

= 6 \cdot \int sin^{4} (u) cos (u) d u

Apply u-substitution

: \int v^{4} d v

= 6 \cdot \int v^{4} d v

Apply the Power Rule

: \frac{v ^{5}}{5}

= 6 \cdot \frac{v ^{5}}{5}

Substitute back

= 6 \cdot \frac{sin ^{5} ( \frac{x}{6} )}{5}

Simplify

6 \cdot \frac{sin ^{5} ( \frac{x}{6} )}{5} : \frac{6}{5} sin^{5} (\frac{x}{6})

= \frac{6}{5} sin^{5} (\frac{x}{6})

Add a constant to the solution

= \frac{6}{5} sin^{5} (\frac{x}{6}) + C

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What is the integral of sin^4(x/6)cos(x/6) ?
The integral of sin^4(x/6)cos(x/6) is 6/5 sin^5(x/6)+C