What is the integral of cot^3(x)*csc^3(x) ?

The integral of cot^3(x)*csc^3(x) is -1/5 csc^5(x)+1/3 csc^3(x)+C

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integral of cot^3(x)*csc^3(x)

\int cot^{3} (x) \cdot csc^{3} (x) d x

- \frac{1}{5} csc^{5} (x) + \frac{1}{3} csc^{3} (x) + C

Solution steps

\int cot^{3} (x) csc^{3} (x) d x

Apply u-substitution

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

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

Take the constant out:

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

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

Expand

u^{2} (u^{2} - 1) : u^{4} - u^{2}

= - \int u^{4} - u^{2} 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^{4} d u - \int u^{2} d u)

\int u^{4} d u = \frac{u ^{5}}{5}

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

= - (\frac{u ^{5}}{5} - \frac{u ^{3}}{3})

Substitute back

u = csc (x)

= - (\frac{csc ^{5} ( x )}{5} - \frac{csc ^{3} ( x )}{3})

Simplify

- (\frac{csc ^{5} ( x )}{5} - \frac{csc ^{3} ( x )}{3}) : - \frac{1}{5} csc^{5} (x) + \frac{1}{3} csc^{3} (x)

= - \frac{1}{5} csc^{5} (x) + \frac{1}{3} csc^{3} (x)

Add a constant to the solution

= - \frac{1}{5} csc^{5} (x) + \frac{1}{3} csc^{3} (x) + C

n = 1 \sum \infty \frac{2 n !}{n ^{n}}

r (2 r + 1)

\frac{d y}{d t} = 5 (y - t^{2})

\int \frac{x ^{3}}{( 2 + x ^{4} ) ^{9}} d x

y^{^{'}} = 2 y - 3 e^{- t}

What is the integral of cot^3(x)*csc^3(x) ?
The integral of cot^3(x)*csc^3(x) is -1/5 csc^5(x)+1/3 csc^3(x)+C