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题文

已知两个等差数列{an}和{bn}的前n项和分别为An和Bn,且,则使得为整数的正整数n的个数是(  )

A.2 B.3 C.4 D.5
科目 数学   题型 选择题   难度 较易
知识点: 数列综合
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A semipro baseball league has teams with 21 players each. League rules state that a player must be paid at least $15,000,and that the total of all players’ salaries for each team cannot exceed $700,000. What is the maximum possible salary,in dollars,for a single player?

A.270,000 B.385,000 C.400,000 D.430,000 E.700,000

当0<a<1时,下列不等式成立的是

A.a<a B.log0.1> log0.2
C.a<a D.log2< log3

函数f(x)=log(x-2)+3,a>0,a1的图像过点(4,),则a的值为

A. B. C.4 D.

已知a=log0.3,b=2,c=0.3,则a,b,c三者的大小关系是

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设函数f(x)=a(a>0),且f(2)=4,则

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