What is the integral of 1/(x^2+6x+50) ?

The integral of 1/(x^2+6x+50) is 1/(sqrt(41))arctan((x+3)/(sqrt(41)))+C

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

integral of 1/(x^2+6x+50)

\int \frac{1}{x ^{2} + 6 x + 50} d x

\frac{1}{41} arctan (\frac{x + 3}{41}) + C

Solution steps

\int \frac{1}{x ^{2} + 6 x + 50} d x

Complete the square

x^{2} + 6 x + 50 : (x + 3)^{2} + 41

= \int \frac{1}{( x + 3 ) ^{2} + 41} d x

Apply u-substitution

= \int \frac{1}{u ^{2} + 41} d u

Apply Integral Substitution

= \int \frac{1}{41 ( v ^{2} + 1 )} d v

Take the constant out:

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

= \frac{1}{41} \cdot \int \frac{1}{v ^{2} + 1} d v

Use the common integral:

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

= \frac{1}{41} arctan (v)

Substitute back

= \frac{1}{41} arctan (\frac{x + 3}{41})

Add a constant to the solution

= \frac{1}{41} arctan (\frac{x + 3}{41}) + C

What is the integral of 1/(x^2+6x+50) ?
The integral of 1/(x^2+6x+50) is 1/(sqrt(41))arctan((x+3)/(sqrt(41)))+C