Question

0.125的负三分之一次方为什么等于2?

Answer 1

2的负3次方是2的3次方的倒数，2的三次方是8，8的倒数是0.125
乘以1还是0.125

Answer 2

0.125=1/8
所以原式=(1/8)^(-1/3)
=[(1/2)^3]^(-1/3)
=(1/2)^(3*-1/3)
=(1/2)^(-1)
=2