What is the integral of x^3sqrt(7+x^4) ?

The integral of x^3sqrt(7+x^4) is 1/6 (7+x^4)^{3/2}+C

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integral of x^3sqrt(7+x^4)

\int x^{3} 7 + x^{4} d x

\frac{1}{6} (7 + x^{4})^{\frac{3}{2}} + C

Solution steps

\int x^{3} 7 + x^{4} d x

Apply u-substitution

: \int \frac{u}{4} d u

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

Take the constant out:

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

= \frac{1}{4} \cdot \int u d u

Apply the Power Rule

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

= \frac{1}{4} \cdot \frac{2}{3} u^{\frac{3}{2}}

Substitute back

u = 7 + x^{4}

= \frac{1}{4} \cdot \frac{2}{3} (7 + x^{4})^{\frac{3}{2}}

Simplify

\frac{1}{4} \cdot \frac{2}{3} (7 + x^{4})^{\frac{3}{2}} : \frac{1}{6} (7 + x^{4})^{\frac{3}{2}}

= \frac{1}{6} (7 + x^{4})^{\frac{3}{2}}

Add a constant to the solution

= \frac{1}{6} (7 + x^{4})^{\frac{3}{2}} + C

x^{6}, x^{7}

\int_{0}^{\frac{π}{4}} tan^{4} (x) d x

y^{^{''}} - 2 y^{^{'}} + y = e^{2 x}

\int_{0}^{l n (19)} x e^{x} d x

\int t sin (n t) d t

What is the integral of x^3sqrt(7+x^4) ?
The integral of x^3sqrt(7+x^4) is 1/6 (7+x^4)^{3/2}+C