2的1+1/2乘以log2 5

问题描述:

2的1+1/2乘以log2 5

是2^(1+1/2*log2 5)吧.
2^(1+1/2*log2 5)
=2^1*2^(1/2*log2 5)
=2*2^(log2 √5)
=2*√5
=2√5.