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人気のある微分積分 >

integral from 1 to 2 of (x^6+1)/(2x^3)

解

\int_{1}^{2} \frac{x ^{6} + 1}{2 x ^{3}} d x

解

\frac{33}{16}

+1

十進法表記

2.0625

解答ステップ

\int_{1}^{2} \frac{x ^{6} + 1}{2 x ^{3}} d x

定数を除く:

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

= \frac{1}{2} \cdot \int_{1}^{2} \frac{x ^{6} + 1}{x ^{3}} d x

拡張

\frac{x ^{6} + 1}{x ^{3}} : x^{3} + \frac{1}{x ^{3}}

= \frac{1}{2} \cdot \int_{1}^{2} x^{3} + \frac{1}{x ^{3}} 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

= \frac{1}{2} (\int_{1}^{2} x^{3} d x + \int_{1}^{2} \frac{1}{x ^{3}} d x)

\int_{1}^{2} x^{3} d x = \frac{15}{4}

\int_{1}^{2} \frac{1}{x ^{3}} d x = \frac{3}{8}

= \frac{1}{2} (\frac{15}{4} + \frac{3}{8})

簡素化

\frac{1}{2} (\frac{15}{4} + \frac{3}{8}) : \frac{33}{16}

= \frac{33}{16}

グラフ

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