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

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

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

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

\frac{9}{2}

Decimal Notation

4.5

Solution steps

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

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

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

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

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

Simplify

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

= \frac{9}{2}

n = 0 \sum \infty \frac{n}{( n - 2 ) !}

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