What is the integral from 0 to 4 of (8-t)sqrt(t) ?

The integral from 0 to 4 of (8-t)sqrt(t) is 448/15

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integral from 0 to 4 of (8-t)sqrt(t)

\int_{0}^{4} (8 - t) t d t

\frac{448}{15}

Decimal Notation

29.86666 \dots

Solution steps

\int_{0}^{4} (8 - t) t d t

Expand

(8 - t) t : 8 t - t^{\frac{3}{2}}

= \int_{0}^{4} 8 t - t^{\frac{3}{2}} d t

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}^{4} 8 t d t - \int_{0}^{4} t^{\frac{3}{2}} d t

\int_{0}^{4} 8 t d t = \frac{128}{3}

\int_{0}^{4} t^{\frac{3}{2}} d t = \frac{64}{5}

= \frac{128}{3} - \frac{64}{5}

Simplify

\frac{128}{3} - \frac{64}{5} : \frac{448}{15}

= \frac{448}{15}

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What is the integral from 0 to 4 of (8-t)sqrt(t) ?
The integral from 0 to 4 of (8-t)sqrt(t) is 448/15