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人気のある微分積分 >

integral from 1 to 9 of pi(sqrt(x-1))^2

解

\int_{1}^{9} π (x - 1)^{2} d x

解

32 π

+1

十進法表記

100.53096 \dots

解答ステップ

\int_{1}^{9} π (x - 1)^{2} d x

定数を除く:

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

= π \cdot \int_{1}^{9} (x - 1)^{2} d x

簡素化

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

= π \cdot \int_{1}^{9} x - 1 d x

総和規則を適用する:

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

= π (\int_{1}^{9} x d x - \int_{1}^{9} 1 d x)

\int_{1}^{9} x d x = 40

\int_{1}^{9} 1 d x = 8

= π (40 - 8)

簡素化

= 32 π

グラフ

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