What is the integral from-3 to-1 of (x^2+x+6) ?

The integral from-3 to-1 of (x^2+x+6) is 50/3

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integral from-3 to-1 of (x^2+x+6)

\int_{- 3}^{- 1} (x^{2} + x + 6) d x

\frac{50}{3}

Decimal

16.66666 \dots

Solution steps

\int_{- 3}^{- 1} x^{2} + x + 6 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_{- 3}^{- 1} x^{2} d x + \int_{- 3}^{- 1} x d x + \int_{- 3}^{- 1} 6 d x

\int_{- 3}^{- 1} x^{2} d x = \frac{26}{3}

\int_{- 3}^{- 1} x d x = - 4

\int_{- 3}^{- 1} 6 d x = 12

= \frac{26}{3} - 4 + 12

Simplify

\frac{26}{3} - 4 + 12 : \frac{50}{3}

= \frac{50}{3}

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What is the integral from-3 to-1 of (x^2+x+6) ?
The integral from-3 to-1 of (x^2+x+6) is 50/3