What is the integral of (5x)/((x+2)(x+3)) ?

The integral of (5x)/((x+2)(x+3)) is 5(-2ln|x+2|+3ln|x+3|)+C

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

integral of (5x)/((x+2)(x+3))

\int \frac{5 x}{( x + 2 ) ( x + 3 )} d x

5 (- 2 ln ∣ x + 2 ∣ + 3 ln ∣ x + 3 ∣) + C

Solution steps

\int \frac{5 x}{( x + 2 ) ( x + 3 )} d x

Take the constant out:

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

= 5 \cdot \int \frac{x}{( x + 2 ) ( x + 3 )} d x

Take the partial fraction of

\frac{x}{( x + 2 ) ( x + 3 )} : - \frac{2}{x + 2} + \frac{3}{x + 3}

= 5 \cdot \int - \frac{2}{x + 2} + \frac{3}{x + 3} d x

Apply the Sum Rule:

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

= 5 (- \int \frac{2}{x + 2} d x + \int \frac{3}{x + 3} d x)

\int \frac{2}{x + 2} d x = 2 ln ∣ x + 2 ∣

\int \frac{3}{x + 3} d x = 3 ln ∣ x + 3 ∣

= 5 (- 2 ln ∣ x + 2 ∣ + 3 ln ∣ x + 3 ∣)

Add a constant to the solution

= 5 (- 2 ln ∣ x + 2 ∣ + 3 ln ∣ x + 3 ∣) + C

What is the integral of (5x)/((x+2)(x+3)) ?
The integral of (5x)/((x+2)(x+3)) is 5(-2ln|x+2|+3ln|x+3|)+C