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Popular Calculus >

integral of x(5-x)

Solution

\int x (5 - x) d x

Solution

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

Solution steps

\int x (5 - x) d x

Expand

x (5 - x) : 5 x - x^{2}

= \int 5 x - 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 5 x d x - \int x^{2} d x

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

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

= \frac{5 x ^{2}}{2} - \frac{x ^{3}}{3}

Add a constant to the solution

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

Graph

Popular Examples

integral of x/(sqrt(4x-3-x^2))

integral of (4x^3-8x)/(x^2(x^2+4))

integral of (5x-1)^5

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

integral of (x-1)/(x-5)

Frequently Asked Questions (FAQ)

What is the integral of x(5-x) ?
The integral of x(5-x) is (5x^2)/2-(x^3)/3+C