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人気のある微分積分 >

簡約 (2(x+1))/(sqrt(x^2+1))

解

簡約

\frac{2 ( x + 1 )}{x ^{2} + 1}

解

\frac{2 ( x + 1 ) x ^{2} + 1}{x ^{2} + 1}

解答ステップ

\frac{2 ( x + 1 )}{x ^{2} + 1}

共役で乗じる

\frac{x ^{2} + 1}{x ^{2} + 1}

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

x^{2} + 1 x^{2} + 1 = x^{2} + 1

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

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