What is the integral of 1/(x^2+6x+34) ?

The integral of 1/(x^2+6x+34) is 1/5 arctan((x+3)/5)+C

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integral of 1/(x^2+6x+34)

\int \frac{1}{x ^{2} + 6 x + 34} d x

\frac{1}{5} arctan (\frac{x + 3}{5}) + C

Solution steps

\int \frac{1}{x ^{2} + 6 x + 34} d x

Complete the square

x^{2} + 6 x + 34 : (x + 3)^{2} + 25

= \int \frac{1}{( x + 3 ) ^{2} + 25} d x

Apply u-substitution

: \int \frac{1}{u ^{2} + 25} d u

= \int \frac{1}{u ^{2} + 25} d u

Apply Integral Substitution

= \int \frac{1}{5 ( 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}{5} \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}{5} arctan (v)

Substitute back

= \frac{1}{5} arctan (\frac{x + 3}{5})

Add a constant to the solution

= \frac{1}{5} arctan (\frac{x + 3}{5}) + C

\int_{1}^{3} \frac{ln ( x )}{x} d x

(2 x + 2 y)^{3} = 8 x^{3} + 8 y^{3} (- 1.1)

\int_{1}^{5} \frac{5}{x} d x

\frac{3}{4 x + 6} + 4 x^{2}

\int (20 x + 7) d x

What is the integral of 1/(x^2+6x+34) ?
The integral of 1/(x^2+6x+34) is 1/5 arctan((x+3)/5)+C