展开 (1+sqrt(5))/2

解答

展开

\frac{1 + 5}{2}

\frac{1}{2} + \frac{5}{2}

十进制

1.61803 \dots

求解步骤

\frac{1 + 5}{2}

使用分式法则:

\frac{a \pm b}{c} = \frac{a}{c} \pm \frac{b}{c}

\frac{1 + 5}{2} = \frac{1}{2} + \frac{5}{2}

= \frac{1}{2} + \frac{5}{2}

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