What is the integral of 6xsqrt(3x^2+5) ?

The integral of 6xsqrt(3x^2+5) is 2/3 (3x^2+5)^{3/2}+C

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integral of 6xsqrt(3x^2+5)

\int 6 x 3 x^{2} + 5 d x

\frac{2}{3} (3 x^{2} + 5)^{\frac{3}{2}} + C

Solution steps

\int 6 x 3 x^{2} + 5 d x

Take the constant out:

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

= 6 \cdot \int x 3 x^{2} + 5 d x

Apply u-substitution

: \int \frac{u}{6} d u

= 6 \cdot \int \frac{u}{6} d u

Take the constant out:

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

= 6 \cdot \frac{1}{6} \cdot \int u d u

Apply the Power Rule

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

= 6 \cdot \frac{1}{6} \cdot \frac{2}{3} u^{\frac{3}{2}}

Substitute back

u = 3 x^{2} + 5

= 6 \cdot \frac{1}{6} \cdot \frac{2}{3} (3 x^{2} + 5)^{\frac{3}{2}}

Simplify

6 \cdot \frac{1}{6} \cdot \frac{2}{3} (3 x^{2} + 5)^{\frac{3}{2}} : \frac{2}{3} (3 x^{2} + 5)^{\frac{3}{2}}

= \frac{2}{3} (3 x^{2} + 5)^{\frac{3}{2}}

Add a constant to the solution

= \frac{2}{3} (3 x^{2} + 5)^{\frac{3}{2}} + C

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What is the integral of 6xsqrt(3x^2+5) ?
The integral of 6xsqrt(3x^2+5) is 2/3 (3x^2+5)^{3/2}+C