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

The integral from-1 to 1 of (x-1)^2 is 8/3

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

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

\frac{8}{3}

Decimal

2.66666 \dots

Solution steps

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

Expand

(x - 1)^{2} : x^{2} - 2 x + 1

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

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

\int_{- 1}^{1} 2 x d x = 0

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

= \frac{2}{3} - 0 + 2

Simplify

\frac{2}{3} - 0 + 2 : \frac{8}{3}

= \frac{8}{3}

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What is the integral from-1 to 1 of (x-1)^2 ?
The integral from-1 to 1 of (x-1)^2 is 8/3