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

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

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integral of (1-x^2)^{(-3)/2}

\int (1 - x^{2})^{\frac{- 3}{2}} d x

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

Solution steps

\int (1 - x^{2})^{\frac{- 3}{2}} d x

Simplify

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

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

Apply Trigonometric Substitution

= \int sec^{2} (u) d u

Use the common integral:

\int sec^{2} (u) d u = tan (u)

= tan (u)

Substitute back

u = arcsin (x)

= tan (arcsin (x))

Use the following identity:

tan (arcsin (x)) = \frac{x}{( 1 - x ^{2} ) ^{\frac{1}{2}}}

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

Add a constant to the solution

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

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