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

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

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integral of 5/(x+1)

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

5 ln ∣ x + 1 ∣ + C

Solution steps

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

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= 5 \cdot \int \frac{1}{x + 1} d x

Apply u-substitution

: \int \frac{1}{u} d u

= 5 \cdot \int \frac{1}{u} d u

Use the common integral:

\int \frac{1}{u} d u = ln (∣ u ∣)

= 5 ln ∣ u ∣

Substitute back

u = x + 1

= 5 ln ∣ x + 1 ∣

Add a constant to the solution

= 5 ln ∣ x + 1 ∣ + C

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

f (x) = \frac{1}{x - 1}

\int x \cdot \frac{1}{x + 1} d x

x \to 5 lim (x^{2} - 6 x + 5)

y^{^{''}} = 3 t cos (9 t)