What is the integral of (5+8x)/(1+x^2) ?

The integral of (5+8x)/(1+x^2) is 5arctan(x)+4ln|1+x^2|+C

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integral of (5+8x)/(1+x^2)

\int \frac{5 + 8 x}{1 + x ^{2}} d x

5 arctan (x) + 4 ln 1 + x^{2} + C

Solution steps

\int \frac{5 + 8 x}{1 + x ^{2}} d x

Expand

\frac{5 + 8 x}{1 + x ^{2}} : \frac{5}{1 + x ^{2}} + \frac{8 x}{1 + x ^{2}}

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}{1 + x ^{2}} d x + \int \frac{8 x}{1 + x ^{2}} d x

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

\int \frac{8 x}{1 + x ^{2}} d x = 4 ln 1 + x^{2}

= 5 arctan (x) + 4 ln 1 + x^{2}

Add a constant to the solution

= 5 arctan (x) + 4 ln 1 + x^{2} + C

\int (3 sec^{2} (4 x) + 3 csc^{2} (4 x)) d x

n = 0 \sum \infty 2 + (0.1)^{n}

\int \frac{1}{2} tan (2 x) d x

\frac{d}{d x} (sin (cos (cot (3 π x))))

What is the integral of (5+8x)/(1+x^2) ?
The integral of (5+8x)/(1+x^2) is 5arctan(x)+4ln|1+x^2|+C