What is the integral from 0 to 10 of xsqrt(100-x^2) ?

The integral from 0 to 10 of xsqrt(100-x^2) is 1000/3

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integral from 0 to 10 of xsqrt(100-x^2)

\int_{0}^{10} x 100 - x^{2} d x

\frac{1000}{3}

Decimal

333.33333 \dots

Solution steps

\int_{0}^{10} x 100 - x^{2} d x

Apply u-substitution

: \int_{100}^{0} - \frac{u}{2} d u

= \int_{100}^{0} - \frac{u}{2} d u

\int_{a}^{b} f (x) d x = - \int_{b}^{a} f (x) d x, a < b

= - \int_{0}^{100} - \frac{u}{2} d u

Take the constant out:

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

= - (- \frac{1}{2} \cdot \int_{0}^{100} u d u)

Apply the Power Rule

: [\frac{2}{3} u^{\frac{3}{2}}]_{0}^{100}

= - (- \frac{1}{2} [\frac{2}{3} u^{\frac{3}{2}}]_{0}^{100})

Simplify

= \frac{1}{2} [\frac{2}{3} u^{\frac{3}{2}}]_{0}^{100}

Compute the boundaries:

\frac{2000}{3}

= \frac{1}{2} \cdot \frac{2000}{3}

Simplify

= \frac{1000}{3}

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What is the integral from 0 to 10 of xsqrt(100-x^2) ?
The integral from 0 to 10 of xsqrt(100-x^2) is 1000/3