What is the integral of 1/(xsqrt(4-9x^2)) ?

The integral of 1/(xsqrt(4-9x^2)) is -1/4 (ln|(sqrt(4-9x^2))/2+1|-ln|(sqrt(4-9x^2))/2-1|)+C

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integral of 1/(xsqrt(4-9x^2))

\int \frac{1}{x 4 - 9 x ^{2}} d x

- \frac{1}{4} (ln \frac{4 - 9 x ^{2}}{2} + 1 - ln \frac{4 - 9 x ^{2}}{2} - 1) + C

Solution steps

\int \frac{1}{x 4 - 9 x ^{2}} d x

Apply u-substitution

: \int \frac{1}{2 u 4 - 9 u} d u

= \int \frac{1}{2 u 4 - 9 u} 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 \frac{1}{u 4 - 9 u} d u

Apply u-substitution

: \int - \frac{2}{- v ^{2} + 4} d v

= \frac{1}{2} \cdot \int - \frac{2}{- v ^{2} + 4} d v

Take the constant out:

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

= \frac{1}{2} (- 2 \cdot \int \frac{1}{- v ^{2} + 4} d v)

Apply Integral Substitution

= \frac{1}{2} (- 2 \cdot \int \frac{1}{2 ( - w ^{2} + 1 )} d w)

Take the constant out:

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

= \frac{1}{2} (- 2 \cdot \frac{1}{2} \cdot \int \frac{1}{- w ^{2} + 1} d w)

Use the common integral:

\int \frac{1}{- w ^{2} + 1} d w = \frac{ln ∣ w + 1 ∣}{2} - \frac{ln ∣ w - 1 ∣}{2}

= \frac{1}{2} (- 2 \cdot \frac{1}{2} (\frac{ln ∣ w + 1 ∣}{2} - \frac{ln ∣ w - 1 ∣}{2}))

Substitute back

= \frac{1}{2} - 2 \cdot \frac{1}{2} \frac{ln \frac{4 - 9 x ^{2}}{2} + 1}{2} - \frac{ln \frac{4 - 9 x ^{2}}{2} - 1}{2}

Simplify

\frac{1}{2} - 2 \cdot \frac{1}{2} \frac{ln \frac{4 - 9 x ^{2}}{2} + 1}{2} - \frac{ln \frac{4 - 9 x ^{2}}{2} - 1}{2} : - \frac{1}{4} (ln \frac{4 - 9 x ^{2}}{2} + 1 - ln \frac{4 - 9 x ^{2}}{2} - 1)

= - \frac{1}{4} (ln \frac{4 - 9 x ^{2}}{2} + 1 - ln \frac{4 - 9 x ^{2}}{2} - 1)

Add a constant to the solution

= - \frac{1}{4} (ln \frac{4 - 9 x ^{2}}{2} + 1 - ln \frac{4 - 9 x ^{2}}{2} - 1) + C

f (x) = 10 - e^{x}, at x = 0

(\frac{1}{t + 1})^{^{'}}

\frac{\partial}{\partial v} (u - v)

\int - 3 x^{2} - 12 x + 15 d x

\int_{0}^{1} \frac{3}{x ^{5}} d x

What is the integral of 1/(xsqrt(4-9x^2)) ?
The integral of 1/(xsqrt(4-9x^2)) is -1/4 (ln|(sqrt(4-9x^2))/2+1|-ln|(sqrt(4-9x^2))/2-1|)+C