What is the integral of sin^5(x)cos^{10}(x) ?

The integral of sin^5(x)cos^{10}(x) is -(cos^{11}(x))/(11)+(2cos^{13}(x))/(13)-(cos^{15}(x))/(15)+C

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integral of sin^5(x)cos^{10}(x)

\int sin^{5} (x) cos^{10} (x) d x

- \frac{cos ^{11} ( x )}{11} + \frac{2 cos ^{13} ( x )}{13} - \frac{cos ^{15} ( x )}{15} + C

Solution steps

\int sin^{5} (x) cos^{10} (x) d x

Rewrite using trig identities

= \int (1 - cos^{2} (x))^{2} sin (x) cos^{10} (x) d x

Apply u-substitution

: \int - u^{10} (1 - u^{2})^{2} d u

= \int - u^{10} (1 - u^{2})^{2} d u

Expand

- u^{10} (1 - u^{2})^{2} : - u^{10} + 2 u^{12} - u^{14}

= \int - u^{10} + 2 u^{12} - u^{14} d u

Apply the Sum Rule:

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

= - \int u^{10} d u + \int 2 u^{12} d u - \int u^{14} d u

\int u^{10} d u = \frac{u ^{11}}{11}

\int 2 u^{12} d u = \frac{2 u ^{13}}{13}

\int u^{14} d u = \frac{u ^{15}}{15}

= - \frac{u ^{11}}{11} + \frac{2 u ^{13}}{13} - \frac{u ^{15}}{15}

Substitute back

u = cos (x)

= - \frac{cos ^{11} ( x )}{11} + \frac{2 cos ^{13} ( x )}{13} - \frac{cos ^{15} ( x )}{15}

Add a constant to the solution

= - \frac{cos ^{11} ( x )}{11} + \frac{2 cos ^{13} ( x )}{13} - \frac{cos ^{15} ( x )}{15} + C

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What is the integral of sin^5(x)cos^{10}(x) ?
The integral of sin^5(x)cos^{10}(x) is -(cos^{11}(x))/(11)+(2cos^{13}(x))/(13)-(cos^{15}(x))/(15)+C