(49/36)-1/2次方等于多少
问题描述:
(49/36)-1/2次方等于多少
答
(49/36)^(-1/2)=(36/49)^(1/2) =[(6/7)^2]^(1/2) =(6/7)^(2*1/2) =6/7 答案6/7
麻烦采纳,谢谢!