What is the integral from 0 to 11 of xsqrt(11-x) ?

The integral from 0 to 11 of xsqrt(11-x) is (484sqrt(11))/(15)

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integral from 0 to 11 of xsqrt(11-x)

\int_{0}^{11} x 11 - x d x

\frac{484 11}{15}

Decimal Notation

107.01642 \dots

Solution steps

\int_{0}^{11} x 11 - x d x

Apply u-substitution

: \int_{11}^{0} - (- u + 11) u d u

= \int_{11}^{0} - (- u + 11) u d u

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

= - \int_{0}^{11} - (- u + 11) u d u

Take the constant out:

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

= - (- \int_{0}^{11} (- u + 11) u d u)

Expand

(- u + 11) u : - u^{\frac{3}{2}} + 11 u

= - (- \int_{0}^{11} - u^{\frac{3}{2}} + 11 u d u)

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= - (- (- \int_{0}^{11} u^{\frac{3}{2}} d u + \int_{0}^{11} 11 u d u))

\int_{0}^{11} u^{\frac{3}{2}} d u = \frac{242 11}{5}

\int_{0}^{11} 11 u d u = \frac{242 11}{3}

= - (- (- \frac{242 11}{5} + \frac{242 11}{3}))

Simplify

- (- (- \frac{242 11}{5} + \frac{242 11}{3})) : \frac{484 11}{15}

= \frac{484 11}{15}

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What is the integral from 0 to 11 of xsqrt(11-x) ?
The integral from 0 to 11 of xsqrt(11-x) is (484sqrt(11))/(15)