What is the integral of (20-2x)^{1/2} ?

The integral of (20-2x)^{1/2} is -1/3 (20-2x)^{3/2}+C

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integral of (20-2x)^{1/2}

integral

(20 - 2 x)^{\frac{1}{2}}

- \frac{1}{3} (20 - 2 x)^{\frac{3}{2}} + C

Solution steps

\int (20 - 2 x)^{\frac{1}{2}} d x

Apply u-substitution

= \int - \frac{u ^{\frac{1}{2}}}{2} d u

Take the constant out:

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

= - \frac{1}{2} \cdot \int u^{\frac{1}{2}} d u

Apply the Power Rule

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

Substitute back

u = 20 - 2 x

= - \frac{1}{2} \cdot \frac{2}{3} (20 - 2 x)^{\frac{3}{2}}

Simplify

- \frac{1}{2} \cdot \frac{2}{3} (20 - 2 x)^{\frac{3}{2}} : - \frac{1}{3} (20 - 2 x)^{\frac{3}{2}}

= - \frac{1}{3} (20 - 2 x)^{\frac{3}{2}}

Add a constant to the solution

= - \frac{1}{3} (20 - 2 x)^{\frac{3}{2}} + C

What is the integral of (20-2x)^{1/2} ?
The integral of (20-2x)^{1/2} is -1/3 (20-2x)^{3/2}+C