如何把2*2^(log2 (5^1/2))化为2倍根号5
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如何把2*2^(log2 (5^1/2))化为2倍根号5
如何把2*2^(log2 (5^1/2))化为2倍根号5
如何把2*2^(log2 (5^1/2))化为2倍根号5
有一个公式
a^[loga(N)]=N
所以原式=2*5^(1/2)=2√5
2^(log2 (5^1/2)=5^1/2=根号5
2*2^(log2 (5^1/2))当然就等于2倍根号5了
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