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

The integral of (x^2+2x-3)/(x^4) is -1/x-1/(x^2)+1/(x^3)+C

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integral of (x^2+2x-3)/(x^4)

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

- \frac{1}{x} - \frac{1}{x ^{2}} + \frac{1}{x ^{3}} + C

Solution steps

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

Expand

\frac{x ^{2} + 2 x - 3}{x ^{4}} : \frac{1}{x ^{2}} + \frac{2}{x ^{3}} - \frac{3}{x ^{4}}

= \int \frac{1}{x ^{2}} + \frac{2}{x ^{3}} - \frac{3}{x ^{4}} 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 \frac{1}{x ^{2}} d x + \int \frac{2}{x ^{3}} d x - \int \frac{3}{x ^{4}} d x

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

\int \frac{2}{x ^{3}} d x = - \frac{1}{x ^{2}}

\int \frac{3}{x ^{4}} d x = - \frac{1}{x ^{3}}

= - \frac{1}{x} - \frac{1}{x ^{2}} - (- \frac{1}{x ^{3}})

Simplify

= - \frac{1}{x} - \frac{1}{x ^{2}} + \frac{1}{x ^{3}}

Add a constant to the solution

= - \frac{1}{x} - \frac{1}{x ^{2}} + \frac{1}{x ^{3}} + C

- 1 x^{- \frac{3}{5}}

\int_{0}^{y} 2 e^{- x - y} d x

\int cos (wt) d t

x \to - 5 lim (\frac{3 x ^{2} + 15 x}{2 x ^{2} - 50})

y = (arctan (9 x))^{2}

What is the integral of (x^2+2x-3)/(x^4) ?
The integral of (x^2+2x-3)/(x^4) is -1/x-1/(x^2)+1/(x^3)+C