What is the integral of 1/(x^2sqrt(a^2-x^2)) ?

The integral of 1/(x^2sqrt(a^2-x^2)) is -(sqrt(a^2-x^2))/(a^2x)+C

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integral of 1/(x^2sqrt(a^2-x^2))

\int \frac{1}{x ^{2} a ^{2} - x ^{2}} d x

- \frac{a ^{2} - x ^{2}}{a ^{2} x} + C

Solution steps

\int \frac{1}{x ^{2} a ^{2} - x ^{2}} d x

Apply Trigonometric Substitution

: \int \frac{cot ( u )}{a ^{2} cos ( u ) sin ( u )} d u

= \int \frac{cot ( u )}{a ^{2} cos ( u ) sin ( u )} d u

Take the constant out:

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

= \frac{1}{a ^{2}} \cdot \int \frac{cot ( u )}{cos ( u ) sin ( u )} d u

Simplify

\frac{cot ( u )}{cos ( u ) sin ( u )} : csc^{2} (u)

= \frac{1}{a ^{2}} \cdot \int csc^{2} (u) d u

Use the common integral:

\int csc^{2} (u) d u = - cot (u)

= \frac{1}{a ^{2}} (- cot (u))

Substitute back

u = arcsin (\frac{1}{a} x)

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

Simplify

\frac{1}{a ^{2}} (- cot (arcsin (\frac{1}{a} x))) : - \frac{a ^{2} - x ^{2}}{a ^{2} x}

= - \frac{a ^{2} - x ^{2}}{a ^{2} x}

Add a constant to the solution

= - \frac{a ^{2} - x ^{2}}{a ^{2} x} + C

x \to - 3 lim (∣ x ∣ - 2)

e^{t}

f (x) = \frac{5 x}{x + 3}, 2, at x = 2

\frac{d}{d x} (2^{a r c t a n (x)})

\int (x + 1)^{2} e^{- 2 x} d x

What is the integral of 1/(x^2sqrt(a^2-x^2)) ?
The integral of 1/(x^2sqrt(a^2-x^2)) is -(sqrt(a^2-x^2))/(a^2x)+C