What is the integral of (x^4-2sqrt(x)+2)/(x^2) ?

The integral of (x^4-2sqrt(x)+2)/(x^2) is (x^3)/3+4/(sqrt(x))-2/x+C

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

integral of (x^4-2sqrt(x)+2)/(x^2)

\int \frac{x ^{4} - 2 x + 2}{x ^{2}} d x

\frac{x ^{3}}{3} + \frac{4}{x} - \frac{2}{x} + C

Solution steps

\int \frac{x ^{4} - 2 x + 2}{x ^{2}} d x

Expand

\frac{x ^{4} - 2 x + 2}{x ^{2}} : x^{2} - \frac{2}{x ^{\frac{3}{2}}} + \frac{2}{x ^{2}}

= \int x^{2} - \frac{2}{x ^{\frac{3}{2}}} + \frac{2}{x ^{2}} 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

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

\int x^{2} d x = \frac{x ^{3}}{3}

\int \frac{2}{x ^{\frac{3}{2}}} d x = - \frac{4}{x}

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

= \frac{x ^{3}}{3} - (- \frac{4}{x}) - \frac{2}{x}

Simplify

= \frac{x ^{3}}{3} + \frac{4}{x} - \frac{2}{x}

Add a constant to the solution

= \frac{x ^{3}}{3} + \frac{4}{x} - \frac{2}{x} + C

What is the integral of (x^4-2sqrt(x)+2)/(x^2) ?
The integral of (x^4-2sqrt(x)+2)/(x^2) is (x^3)/3+4/(sqrt(x))-2/x+C