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

The integral of 1/(xln(x)sqrt((2ln(x))^2-1)) is arctan(sqrt(4ln^2(x)-1))+C

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integral of 1/(xln(x)sqrt((2ln(x))^2-1))

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

arctan (4 ln^{2} (x) - 1) + C

Solution steps

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

Apply u-substitution

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

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

Apply u-substitution

: \int \frac{1}{v ^{2} + 1} d v

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

Use the common integral:

\int \frac{1}{v ^{2} + 1} d v = arctan (v)

= arctan (v)

Substitute back

= arctan (4 ln^{2} (x) - 1)

Add a constant to the solution

= arctan (4 ln^{2} (x) - 1) + C

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