What is the integral of x^2sqrt(x^3+9) ?

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

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integral of x^2sqrt(x^3+9)

\int x^{2} x^{3} + 9 d x

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

Solution steps

\int x^{2} x^{3} + 9 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} + 9

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

Simplify

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

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

Add a constant to the solution

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

\int e^{c}

\frac{\partial}{\partial x} (4 x - \frac{y ^{2}}{x ^{2}})

(0, 2), (2, 0)

y = 3 sin (x), at x = \frac{π}{4}

y^{^{''}} + 2 y^{^{'}} + 4 y = 50 cos (t)

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