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设数列an和bn满足a1=b1=6，a2=b2=4,a3=b3=3且数列an+1-an是等差数列，数列bn-2是等比是否存在k使ak-bk属于(0,1/2)若存在求k
2010-09-01 23:32 来自版块 -
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已知a∧2/3+b∧2/3=4 x=a+3(a∧1/3)(b∧2/3) y=b+3(a∧2/3)(b∧1/3)则 (x+y)∧2/3 +(x-y)∧2/3=
2010-08-30 22:21 来自版块 -
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log8(3)=p,log3(5)=q,则lg(5)=?????????
2010-08-30 22:20 来自版块 -
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lg∧2(x)+(lg(3)+lg(2))lg(x)+lg(2)lg(3)=0的两根(x1、x2)之积
2010-08-30 22:18 来自版块 -
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2lg(x-2y)=lg(x)+lg(y),则log2(x/y)=
2010-08-30 22:17 来自版块 -
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设数列an和bn满足a1=b1=6，a2=b2=4,a3=b3=3且数列an+1-an是等差数列，数列bn-2是等比是否存在k使ak-bk属于(0,1/2)若存在求k
2010-07-19 22:41 来自版块 -
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lg∧2(x)+(lg(3)+lg(2))lg(x)+lg(2)lg(3)=0的两根(x1、x2)之积
2010-07-19 22:08 来自版块 -
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log8(3)=p,log3(5)=q,则lg(5)=?????????
2010-07-19 22:08 来自版块 -
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已知a∧2/3+b∧2/3=4 x=a+3(a∧1/3)(b∧2/3) y=b+3(a∧2/3)(b∧1/3)则 (x+y)∧2/3 +(x-y)∧2/3=
2010-07-19 22:08 来自版块 -
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2lg(x-2y)=lg(x)+lg(y),则log2(x/y)=
2010-07-19 22:07 来自版块 -
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2lg(x-2y)=lg(x)+lg(y),则log2(x/y)=
2010-05-25 23:37 来自版块 -
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已知a∧2/3+b∧2/3=4 x=a+3(a∧1/3)(b∧2/3) y=b+3(a∧2/3)(b∧1/3)则 (x+y)∧2/3 +(x-y)∧2/3=
2010-05-25 23:36 来自版块 -
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log8(3)=p,log3(5)=q,则lg(5)=?????????
2010-05-25 23:35 来自版块 -
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lg∧2(x)+(lg(3)+lg(2))lg(x)+lg(2)lg(3)=0的两根(x1、x2)之积
2010-05-25 23:35 来自版块 -
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设数列an和bn满足a1=b1=6，a2=b2=4,a3=b3=3且数列an+1-an是等差数列，数列bn-2是等比是否存在k使ak-bk属于(0,1/2)若存在求k
2010-05-25 23:22 来自版块 -
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若实数a,b,c成等差数列,则直线ax+by+c=0被圆x2+y2=5截得的线段中点的轨迹方程
2010-04-16 00:01 来自版块 -
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4
2010-04-16 00:00 来自版块 -
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已知圆M:[x-2]2+y2=1，Q是y轴上的动点，QA,QB分别切圆M于A,B两点．求动弦AB的中点P的轨迹方程
2010-04-15 18:46 来自版块 -
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设数列an和bn满足a1=b1=6，a2=b2=4,a3=b3=3且数列an+1-an是等差数列，数列bn-2是等比是否存在k使ak-bk属于(0,1/2)若存在求k
2010-04-15 18:46 来自版块 -
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2lg(x-2y)=lg(x)+lg(y),则log2(x/y)=
2010-04-14 16:18 来自版块 -
