Question

一道数学题2^x=根号2/4求x急是2^x=（根号2）/4

Answer 1

2个方法:

1,直接算

x=log(2)√2/4=log(2)√2-log(2)4==1/2-2=-1.5

2,观察

2^x=√2/4

2^x=2^(1/2)/2^2=2^(-3/2)

x=-3/2=-1.5