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已知函数y=(mx^2-6mx+m+8)^1/2的定义域是R （1）求实数m的取值范围(2)当m变化时，若y的最小值为f(m),求f(m)的值域
2010-01-15 11:54 来自版块 -
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已知函数y=(mx^2-6mx+m+8)^1/2的定义域是R （1）求实数m的取值范围(2)当m变化时，若y的最小值为f(m),求f(m)的值域
2009-11-30 18:25 来自版块 -
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已知函数y=(mx^2-6mx+m+8)^1/2的定义域是R （1）求实数m的取值范围(2)当m变化时，若y的最小值为f(m),求f(m)的值域
2009-10-26 23:43 来自版块 -
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已知函数y=(mx^2-6mx+m+8)^1/2的定义域是R （1）求实数m的取值范围(2)当m变化时，若y的最小值为f(m),求f(m)的值域
2009-09-22 23:00 来自版块 -
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已知函数y=(mx^2-6mx+m+8)^1/2的定义域是R （1）求实数m的取值范围(2)当m变化时，若y的最小值为f(m),求f(m)的值域
2009-08-20 22:53 来自版块 -
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where did you get to know the professor over there?It was at the workshop__we did research together two years ago.A.that B.there C.wh... 全文
2009-07-24 16:48 来自版块 -
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1.It's thirty years since we last met.But I still remember the story;believe it or not,__we got lost on a rainy night.是什么句，选项的原因？A.whic... 全文
2009-07-23 19:14 来自版块 -
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1.Do you have any idea__is actually going on in the classroom?是什么句，选项的原因？A.that B.what C.as D.which2.Engines are to machin... 全文
2009-07-23 19:08 来自版块 -
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It is the people not things that are most important.是强调句还是定语从句为什么？I don't like_ you speak to her.A.the way B.the way of which为什么？
2009-07-23 08:59 来自版块 -
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it was in 1969_two Americans got to the moon by space ship.it was 1969_two Americans got to the moon by space ship.A.when B.which ... 全文
2009-07-22 13:42 来自版块 -
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In the office I never seem to have time until 5:30p.m,_ many peopie have got home.A.whose B.where C.on which ... 全文
2009-07-20 15:21 来自版块 -
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如何求证y=x^3-6x^2+x+8是单调递减函数
2009-07-18 17:17 来自版块 -
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f(x)是定义在R的以3为周期的奇函数，且f(2)=0,则方程f(x)=0在区间(0,6)内解有——个
2009-07-18 15:42 来自版块 -
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已知函数y=(mx^2-6mx+m+8)^1/2的定义域是R （1）求实数m的取值范围(2)当m变化时，若y的最小值为f(m),求f(m)的值域
2009-07-17 13:10 来自版块 -
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设f(x)是R上的奇函数 ,f(x+2)=负f(x),当x属于[0，1]时， f(x)=x,则f(7.5)= A.0.5 B.-0.5 C.1.5 D.-1.5
2009-07-16 22:23 来自版块 -
