What is the integral from-2 to 2 of 8x^2 ?

The integral from-2 to 2 of 8x^2 is 128/3

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integral from-2 to 2 of 8x^2

\int_{- 2}^{2} 8 x^{2} d x

\frac{128}{3}

Decimal

42.66666 \dots

Solution steps

\int_{- 2}^{2} 8 x^{2} d x

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= 8 \cdot \int_{- 2}^{2} x^{2} d x

Apply the Power Rule

: [\frac{x ^{3}}{3}]_{- 2}^{2}

= 8 [\frac{x ^{3}}{3}]_{- 2}^{2}

Compute the boundaries:

\frac{16}{3}

= 8 \cdot \frac{16}{3}

Simplify

= \frac{128}{3}

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What is the integral from-2 to 2 of 8x^2 ?
The integral from-2 to 2 of 8x^2 is 128/3