(2^-1 -3^-1)^-1
=????????????????
在3^4中,4是
A. 3的係數
B. 3的底
C. 3的冪
D. 3的倍數
E. 3的因數
數學2條 (5點)
2008-08-24 11:10 pm
回答 (1)
2008-08-24 11:43 pm
✔ 最佳答案
1.(2^-1 - 3^-1)^-1 = 1/(2^-1 - 3^-1) = 1/[(1/2) - (1/3)] = 1/[3/6 - 2/6] = 1/(1/6) = 6.
2. Answer is C.
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