What is the integral of sqrt(20-2x) ?

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

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integral of sqrt(20-2x)

integral

20 - 2 x

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

Solution steps

\int 20 - 2 x d x

Apply u-substitution

: \int - \frac{u}{2} d u

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

Apply the Power Rule

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

= - \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

\frac{1}{2 x ^{2}}

20 (x - 3) (x + 2)^{3}

\frac{( 3 x ^{2} - 2 )}{( x ^{2} - 2 x - 8 )}

\frac{1}{( tan ( x ) + cot ( x ) ) ^{2}}

\frac{1}{x ^{\frac{1}{2}}}

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