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

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

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integral of 1/(sqrt(x)-1)

\int \frac{1}{x - 1} d x

2 (x - 1 + ln x - 1) + C

Solution steps

\int \frac{1}{x - 1} d x

Apply u-substitution

: \int \frac{2 ( u + 1 )}{u} d u

= \int \frac{2 ( u + 1 )}{u} d u

Take the constant out:

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

= 2 \cdot \int \frac{u + 1}{u} d u

Expand

\frac{u + 1}{u} : 1 + \frac{1}{u}

= 2 \cdot \int 1 + \frac{1}{u} d u

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= 2 (\int 1 d u + \int \frac{1}{u} d u)

\int 1 d u = u

\int \frac{1}{u} d u = ln ∣ u ∣

= 2 (u + ln ∣ u ∣)

Substitute back

u = x - 1

= 2 (x - 1 + ln x - 1)

Add a constant to the solution

= 2 (x - 1 + ln x - 1) + C

x \to 2 lim (2 - x^{2})

\int_{1}^{e^{4}} x^{4} ln (x) d x

f (x) = x^{2} - 2 x + 5, at x = 1

8 + 5 x

y = x^{2} + 4, (- 5, 29)

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