What is the integral of (x^3)/(sqrt(36-x^2)) ?

The integral of (x^3)/(sqrt(36-x^2)) is 1/3 (36-x^2)^{3/2}-36sqrt(36-x^2)+C

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integral of (x^3)/(sqrt(36-x^2))

\int \frac{x ^{3}}{36 - x ^{2}} d x

\frac{1}{3} (36 - x^{2})^{\frac{3}{2}} - 36 36 - x^{2} + C

Solution steps

\int \frac{x ^{3}}{36 - x ^{2}} d x

Apply u-substitution

: \int u^{2} - 36 d u

= \int u^{2} - 36 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^{2} d u - \int 36 d u

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

\int 36 d u = 36 u

= \frac{u ^{3}}{3} - 36 u

Substitute back

u = 36 - x^{2}

= \frac{( 36 - x ^{2} ) ^{3}}{3} - 36 36 - x^{2}

Simplify

\frac{( 36 - x ^{2} ) ^{3}}{3} - 36 36 - x^{2} : \frac{1}{3} (36 - x^{2})^{\frac{3}{2}} - 36 36 - x^{2}

= \frac{1}{3} (36 - x^{2})^{\frac{3}{2}} - 36 36 - x^{2}

Add a constant to the solution

= \frac{1}{3} (36 - x^{2})^{\frac{3}{2}} - 36 36 - x^{2} + C

x \to - 10 + lim (f (x))

\int 3 sin (\frac{x}{3}) d x

\int (x^{2} - 3) e^{x} d x

\frac{d}{d x} ((2 x^{2} + x)^{200})

f (x) = \frac{y - 1}{3}

What is the integral of (x^3)/(sqrt(36-x^2)) ?
The integral of (x^3)/(sqrt(36-x^2)) is 1/3 (36-x^2)^{3/2}-36sqrt(36-x^2)+C