What is the integral of (9+x+x^2)/(sqrt(x)) ?

The integral of (9+x+x^2)/(sqrt(x)) is 18sqrt(x)+2/3 x^{3/2}+2/5 x^{5/2}+C

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integral of (9+x+x^2)/(sqrt(x))

\int \frac{9 + x + x ^{2}}{x} d x

18 x + \frac{2}{3} x^{\frac{3}{2}} + \frac{2}{5} x^{\frac{5}{2}} + C

Solution steps

\int \frac{9 + x + x ^{2}}{x} d x

Expand

\frac{9 + x + x ^{2}}{x} : \frac{9}{x} + x + x^{\frac{3}{2}}

= \int \frac{9}{x} + x + x^{\frac{3}{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 \frac{9}{x} d x + \int x d x + \int x^{\frac{3}{2}} d x

\int \frac{9}{x} d x = 18 x

\int x d x = \frac{2}{3} x^{\frac{3}{2}}

\int x^{\frac{3}{2}} d x = \frac{2}{5} x^{\frac{5}{2}}

= 18 x + \frac{2}{3} x^{\frac{3}{2}} + \frac{2}{5} x^{\frac{5}{2}}

Add a constant to the solution

= 18 x + \frac{2}{3} x^{\frac{3}{2}} + \frac{2}{5} x^{\frac{5}{2}} + C

(x^{2} + 3) (x^{3} + 5)

x \to \infty lim (x^{3} e^{x})

f (x) = 2 x^{2} + 8 x, at x = 4

n \to 0 lim (sin (\frac{1}{n}))

\frac{d}{d x} (4 x^{2} cos (x) - x)

What is the integral of (9+x+x^2)/(sqrt(x)) ?
The integral of (9+x+x^2)/(sqrt(x)) is 18sqrt(x)+2/3 x^{3/2}+2/5 x^{5/2}+C