What is the integral of (5x+5)/(x^2+1) ?

The integral of (5x+5)/(x^2+1) is 5/2 ln|x^2+1|+5arctan(x)+C

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integral of (5x+5)/(x^2+1)

\int \frac{5 x + 5}{x ^{2} + 1} d x

\frac{5}{2} ln x^{2} + 1 + 5 arctan (x) + C

Solution steps

\int \frac{5 x + 5}{x ^{2} + 1} d x

Expand

\frac{5 x + 5}{x ^{2} + 1} : \frac{5 x}{x ^{2} + 1} + \frac{5}{x ^{2} + 1}

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{5 x}{x ^{2} + 1} d x + \int \frac{5}{x ^{2} + 1} d x

\int \frac{5 x}{x ^{2} + 1} d x = \frac{5}{2} ln x^{2} + 1

\int \frac{5}{x ^{2} + 1} d x = 5 arctan (x)

= \frac{5}{2} ln x^{2} + 1 + 5 arctan (x)

Add a constant to the solution

= \frac{5}{2} ln x^{2} + 1 + 5 arctan (x) + C

e^{3 x^{4}}

\int sin^{3} (3 x) d x

\frac{d}{d x} (\frac{arccos ( x )}{e ^{x}})

- \frac{d y}{d x} = 2 y - x

\int \frac{e ^{x^{2}}}{2 x} \cdot 5 x^{4} d x

What is the integral of (5x+5)/(x^2+1) ?
The integral of (5x+5)/(x^2+1) is 5/2 ln|x^2+1|+5arctan(x)+C