ja

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

人気のある微分積分 >

integral of (x^3-8x+1)/(8x^4)

解

\int \frac{x ^{3} - 8 x + 1}{8 x ^{4}} d x

解

\frac{1}{8} (ln ∣ x ∣ + \frac{4}{x ^{2}} - \frac{1}{3 x ^{3}}) + C

解答ステップ

\int \frac{x ^{3} - 8 x + 1}{8 x ^{4}} d x

定数を除く:

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

= \frac{1}{8} \cdot \int \frac{x ^{3} - 8 x + 1}{x ^{4}} d x

拡張

\frac{x ^{3} - 8 x + 1}{x ^{4}} : \frac{1}{x} - \frac{8}{x ^{3}} + \frac{1}{x ^{4}}

= \frac{1}{8} \cdot \int \frac{1}{x} - \frac{8}{x ^{3}} + \frac{1}{x ^{4}} 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}{8} (\int \frac{1}{x} d x - \int \frac{8}{x ^{3}} d x + \int \frac{1}{x ^{4}} d x)

\int \frac{1}{x} d x = ln ∣ x ∣

\int \frac{8}{x ^{3}} d x = - \frac{4}{x ^{2}}

\int \frac{1}{x ^{4}} d x = - \frac{1}{3 x ^{3}}

= \frac{1}{8} (ln ∣ x ∣ - (- \frac{4}{x ^{2}}) - \frac{1}{3 x ^{3}})

簡素化

= \frac{1}{8} (ln ∣ x ∣ + \frac{4}{x ^{2}} - \frac{1}{3 x ^{3}})

定数を解答に追加する

= \frac{1}{8} (ln ∣ x ∣ + \frac{4}{x ^{2}} - \frac{1}{3 x ^{3}}) + C

グラフ

人気の例

integral of x/(b-a)

\int \frac{x}{b - a} d x

integral of (x+2)sqrt(3-x)

\int (x + 2) 3 - x d x

integral of 2e^xcos(e^x)

\int 2 e^{x} cos (e^{x}) d x

integral of (3x^3+6sqrt(x)+1/(x^3))

\int (3 x^{3} + 6 x + \frac{1}{x ^{3}}) d x

integral of x^2sin((npix)/l)

\int x^{2} sin (\frac{nπ x}{l}) d x