What is the integral of 8sin^3(x) ?

The integral of 8sin^3(x) is 8(-cos(x)+(cos^3(x))/3)+C

integral of 8sin^3(x)

\int 8 sin^{3} (x) d x

8 (- cos (x) + \frac{cos ^{3} ( x )}{3}) + C

Solution steps

\int 8 sin^{3} (x) d x

Take the constant out:

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

= 8 \cdot \int sin^{3} (x) d x

Rewrite using trig identities

= 8 \cdot \int (1 - cos^{2} (x)) sin (x) d x

Apply u-substitution

= 8 \cdot \int - 1 + 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

= 8 (- \int 1 d u + \int u^{2} d u)

\int 1 d u = u

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

= 8 (- u + \frac{u ^{3}}{3})

Substitute back

u = cos (x)

= 8 (- cos (x) + \frac{cos ^{3} ( x )}{3})

Add a constant to the solution

= 8 (- cos (x) + \frac{cos ^{3} ( x )}{3}) + C

4 x y d x + (x^{2} + 1) d y = 0

in v erse l a pl a ce \frac{( s + 1 )}{s ^{2}}

\frac{\partial}{\partial x} (8 e^{x - y})

\frac{\partial}{\partial x} (e^{x^{2} + y})

\int 5 sin^{3} (x co) s^{2} x d x

What is the integral of 8sin^3(x) ?
The integral of 8sin^3(x) is 8(-cos(x)+(cos^3(x))/3)+C