What is the integral of (7x^2+2sqrt(x)+1/(x^3)) ?

The integral of (7x^2+2sqrt(x)+1/(x^3)) is (7x^3)/3+4/3 x^{3/2}-1/(2x^2)+C

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integral of (7x^2+2sqrt(x)+1/(x^3))

\int (7 x^{2} + 2 x + \frac{1}{x ^{3}}) d x

\frac{7 x ^{3}}{3} + \frac{4}{3} x^{\frac{3}{2}} - \frac{1}{2 x ^{2}} + C

Solution steps

\int 7 x^{2} + 2 x + \frac{1}{x ^{3}} 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 7 x^{2} d x + \int 2 x d x + \int \frac{1}{x ^{3}} d x

\int 7 x^{2} d x = \frac{7 x ^{3}}{3}

\int 2 x d x = \frac{4}{3} x^{\frac{3}{2}}

\int \frac{1}{x ^{3}} d x = - \frac{1}{2 x ^{2}}

= \frac{7 x ^{3}}{3} + \frac{4}{3} x^{\frac{3}{2}} - \frac{1}{2 x ^{2}}

Add a constant to the solution

= \frac{7 x ^{3}}{3} + \frac{4}{3} x^{\frac{3}{2}} - \frac{1}{2 x ^{2}} + C

What is the integral of (7x^2+2sqrt(x)+1/(x^3)) ?
The integral of (7x^2+2sqrt(x)+1/(x^3)) is (7x^3)/3+4/3 x^{3/2}-1/(2x^2)+C