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人気のある微分積分 >

integral from 0 to 2 of 3x(x^2+3)^3

解

\int_{0}^{2} 3 x (x^{2} + 3)^{3} d x

解

870

解答ステップ

\int_{0}^{2} 3 x (x^{2} + 3)^{3} d x

定数を除く:

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

= 3 \cdot \int_{0}^{2} x (x^{2} + 3)^{3} d x

u置換積分法を適用する

= 3 \cdot \int_{3}^{7} \frac{u ^{3}}{2} d u

定数を除く:

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

= 3 \cdot \frac{1}{2} \cdot \int_{3}^{7} u^{3} d u

べき乗則を適用する

= 3 \cdot \frac{1}{2} [\frac{u ^{4}}{4}]_{3}^{7}

簡素化

3 \cdot \frac{1}{2} [\frac{u ^{4}}{4}]_{3}^{7} : \frac{3}{2} [\frac{u ^{4}}{4}]_{3}^{7}

= \frac{3}{2} [\frac{u ^{4}}{4}]_{3}^{7}

限度を計算する:

580

= \frac{3}{2} \cdot 580

簡素化

= 870

グラフ

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