What is the integral of (x^2sqrt(x^3+1)) ?

The integral of (x^2sqrt(x^3+1)) is 2/9 (x^3+1)^{3/2}+C

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integral of (x^2sqrt(x^3+1))

\int (x^{2} x^{3} + 1) d x

\frac{2}{9} (x^{3} + 1)^{\frac{3}{2}} + C

Solution steps

\int x^{2} x^{3} + 1 d x

Apply u-substitution

: \int \frac{u}{3} d u

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

Take the constant out:

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

= \frac{1}{3} \cdot \int u d u

Apply the Power Rule

: \frac{2}{3} u^{\frac{3}{2}}

= \frac{1}{3} \cdot \frac{2}{3} u^{\frac{3}{2}}

Substitute back

u = x^{3} + 1

= \frac{1}{3} \cdot \frac{2}{3} (x^{3} + 1)^{\frac{3}{2}}

Simplify

\frac{1}{3} \cdot \frac{2}{3} (x^{3} + 1)^{\frac{3}{2}} : \frac{2}{9} (x^{3} + 1)^{\frac{3}{2}}

= \frac{2}{9} (x^{3} + 1)^{\frac{3}{2}}

Add a constant to the solution

= \frac{2}{9} (x^{3} + 1)^{\frac{3}{2}} + C

\frac{d y}{d t} = 0.225 - 0.0045 y

\int sin^{5} (8 θ) d θ

\frac{d}{d x} (arcsec (e^{x}))

(2) (1)

\int_{2}^{1} x^{2} d x

What is the integral of (x^2sqrt(x^3+1)) ?
The integral of (x^2sqrt(x^3+1)) is 2/9 (x^3+1)^{3/2}+C