What is the integral of sqrt(5+4x) ?

The integral of sqrt(5+4x) is 1/6 (5+4x)^{3/2}+C

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integral of sqrt(5+4x)

\int 5 + 4 x d x

\frac{1}{6} (5 + 4 x)^{\frac{3}{2}} + C

Solution steps

\int 5 + 4 x d x

Apply u-substitution

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

Substitute back

u = 5 + 4 x

= \frac{1}{4} \cdot \frac{2}{3} (5 + 4 x)^{\frac{3}{2}}

Simplify

\frac{1}{4} \cdot \frac{2}{3} (5 + 4 x)^{\frac{3}{2}} : \frac{1}{6} (5 + 4 x)^{\frac{3}{2}}

= \frac{1}{6} (5 + 4 x)^{\frac{3}{2}}

Add a constant to the solution

= \frac{1}{6} (5 + 4 x)^{\frac{3}{2}} + C

What is the integral of sqrt(5+4x) ?
The integral of sqrt(5+4x) is 1/6 (5+4x)^{3/2}+C