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Popular Calculus >

integral of x^2+x-1

Solution

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

Solution

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

Solution steps

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

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

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

\int 1 d x = x

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

Add a constant to the solution

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

Graph

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Frequently Asked Questions (FAQ)

What is the integral of x^2+x-1 ?
The integral of x^2+x-1 is (x^3)/3+(x^2)/2-x+C