展开 (5e^x)/((5+e^x)^2)

解答

展开

\frac{5 e ^{x}}{( 5 + e ^{x} ) ^{2}}

\frac{5 e ^{x}}{25 + 10 e ^{x} + e ^{2 x}}

求解步骤

\frac{5 e ^{x}}{( 5 + e ^{x} ) ^{2}}

(5 + e^{x})^{2} = 25 + 10 e^{x} + e^{2 x}

= \frac{5 e ^{x}}{25 + 10 e ^{x} + e ^{2 x}}

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