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请教:
40. DS:求aX^3+bX+x等于多少?(1)、a(-X)^3+b(-X)+(-X)=1 (2)、abc>0
[确认] A
这个答案是-1吗?
41. n,15,12,9,20,n=?
1)n
2)median是13。
看这是e的了,居然选了b.昏倒。
[确认] D
为什么选D?
71. what is value of W third root?
1), W fifth root is 64
2), W fifteen root is 4
I saw JJ and answer is B(?), this is my second question. I don't remember which one I chose, maybe B, but don't understand why.
[讨论]
什么意思????
96,一个人存钱x,存n年,1/4复利,利率是5%,问n年以后有多少钱
[讨论]
怎么做????????? |
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