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Popular >

integral from-1 to 2 of x^2-x-2

Solution

\int_{- 1}^{2} x^{2} - x - 2 d x

Solution

- \frac{9}{2}

+1

Decimal Notation

- 4.5

Solution steps

\int_{- 1}^{2} x^{2} - 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}^{2} x^{2} d x - \int_{- 1}^{2} x d x - \int_{- 1}^{2} 2 d x

\int_{- 1}^{2} x^{2} d x = 3

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

\int_{- 1}^{2} 2 d x = 6

= 3 - \frac{3}{2} - 6

Simplify

3 - \frac{3}{2} - 6 : - \frac{9}{2}

= - \frac{9}{2}

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Frequently Asked Questions (FAQ)

What is the integral from-1 to 2 of x^2-x-2 ?
The integral from-1 to 2 of x^2-x-2 is -9/2