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

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

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

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

x + ln ∣ x ∣ - \frac{1}{x} + C

Solution steps

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

\int 1 d x = x

\int \frac{1}{x} d x = ln ∣ x ∣

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

= x + ln ∣ x ∣ - \frac{1}{x}

Add a constant to the solution

= x + ln ∣ x ∣ - \frac{1}{x} + C

(x, y) \to (0, 0) lim (x^{y})

x \to 2 lim (7 - 2 x)

\int \frac{x}{x ^{4} + 9} d x

\int \frac{x + 4}{x ^{2} + 2 x + 5} d x

\int_{0}^{2} x d x

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