(1/4)^x = (1/2)^(2x) = 2^(-2x)4√2 = 2^2 * 2^(1/2) = 2^(5/2)所以 -2x=5/2x=-5/4
(1/4)^x=4√24^(-x)=2^(5/2)2^(-2x)=2^(5/2)-2x=5/2x=-5/4
