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标题: 大全-Math-DS-section 17-20 [打印本页]
作者: WalkByFaith 时间: 2005-7-13 08:13
标题: 大全-Math-DS-section 17-20
大全-Math-DS-section 17-20
20. Is less than 1,000 ?
(1) 5^(k-1) >3000
(2) 5^(k-1) >5^k - 500
ans: B.
I thought it should be D because 1) gives us : 5^k >3000*5, thus 5^(k-1) >15000
NN, please help, thanks.
作者: WalkByFaith 时间: 2005-7-13 08:15
i am sorry, should be:
大全-Math-DS-section 17-20
20. Is 5^k ATH connecttype="rect" gradientshapeok="t" extrusionok="f">ATH>less than 1,000 ?
(1) 5^(k-1) >3000
(2) 5^(k-1) >5^k - 500
ans: B.
I thought it should be D because 1) gives us : 5^k >3000*5, thus 5^k >15000
NN, please help, thanks.
作者: WalkByFaith 时间: 2005-7-13 13:17
自己顶一下, 求NN帮忙啊!
作者: WalkByFaith 时间: 2005-7-13 23:42
up again by myself.
作者: happyfish0517 时间: 2005-7-13 23:59
以下是引用whq2002在2005-7-13 8:13:00的发言:大全-Math-DS-section 17-20
20. Is less than 1,000 ?
(1) 5^(k-1) >3000
(2) 5^(k-1) >5^k - 500
ans: B.
I thought it should be D because 1) gives us : 5^k >3000*5, thus 5^(k-1) >15000
NN, please help, thanks.
不好意思啊~~题目highlight处好像不全啊...什么<1000呢?
作者: WalkByFaith 时间: 2005-7-14 06:57
THAT SHOULD BE 5^k WHICH WAS CORRECTED IN SECOND FLOOR.
happyfish0517, PLEASE HELP, THANK YOU VERY MUCH.
作者: WalkByFaith 时间: 2005-7-14 13:31
up by myself again, sorry, NN, any suggestions and comments? thanks.
作者: WalkByFaith 时间: 2005-7-15 01:39
UP AGAIN:
大全-Math-DS-section 17-20
20. Is 5^k ATH gradientshapeok="t" extrusionok="f" connecttype="rect">ATH>less than 1,000 ?
(1) 5^(k-1) >3000
(2) 5^(k-1) >5^k - 500
ans: B.
I thought it should be D because 1) gives us : 5^k >3000*5, thus 5^k >15000
NN, CORRECT ME, thanks.
作者: happyfish0517 时间: 2005-7-15 01:48
SORRY啊,才来~~
如果正如LZ所述,这题是应该选D...
如果1)中是5^(K-1)<3000,那就是B...
汗!
[此贴子已经被作者于2005-7-15 1:54:04编辑过]
作者: happyfish0517 时间: 2005-7-15 01:58
另外...我弱弱的问一下楼主~~~数学大全是什么?
是CD上下载的吗?为什么我没找到过??
谢谢!~
作者: WalkByFaith 时间: 2005-7-15 08:28
thanks for your confirmation, happyfish0517.
what i mean 数学大全 is the paper test accumulation or old XDF 4 volumes.
thanks again.
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