化简 3/4 (1-(-1/3)^{k+1})

解答

化简

\frac{3}{4} (1 - (- \frac{1}{3})^{k + 1})

\frac{3 ( 1 - ( - \frac{1}{3} ) ^{k + 1} )}{4}

求解步骤

\frac{3}{4} (1 - (- \frac{1}{3})^{k + 1})

使用分式法则:

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

= \frac{3 ( 1 - ( - \frac{1}{3} ) ^{k + 1} )}{4}

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