What is the integral of 2/(sqrt(2-9x^2)) ?

The integral of 2/(sqrt(2-9x^2)) is 2/3 arcsin(3/(sqrt(2))x)+C

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

integral of 2/(sqrt(2-9x^2))

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

\frac{2}{3} arcsin (\frac{3}{2} x) + C

Solution steps

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

Take the constant out:

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

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

Apply Trigonometric Substitution

= 2 \cdot \int \frac{1}{3} d u

Take the constant out:

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

= 2 \cdot \frac{1}{3} \cdot \int 1 d u

Integral of a constant:

\int a d x = a x

= 2 \cdot \frac{1}{3} \cdot 1 \cdot u

Substitute back

u = arcsin (\frac{3}{2} x)

= 2 \cdot \frac{1}{3} \cdot 1 \cdot arcsin (\frac{3}{2} x)

Simplify

2 \cdot \frac{1}{3} \cdot 1 \cdot arcsin (\frac{3}{2} x) : \frac{2}{3} arcsin (\frac{3}{2} x)

= \frac{2}{3} arcsin (\frac{3}{2} x)

Add a constant to the solution

= \frac{2}{3} arcsin (\frac{3}{2} x) + C

What is the integral of 2/(sqrt(2-9x^2)) ?
The integral of 2/(sqrt(2-9x^2)) is 2/3 arcsin(3/(sqrt(2))x)+C