【单选题】设函数y=f(x)的定义域为D,若对于任意x 1 ,x 2 ∈D且x 1 +x 2 =2a,恒有f(x 1 )+f(x 2 )=2b,则称点(a,b)为函数y=f(x)图象的对称中心.研究并利用函数f(x)=x 3 -3x 2 -sin(πx)的对称中心,可得 f( 1 2012 )+f( 2 2012 )+…+f( 4022 2012 )+f( 4023 2012 ) =( )
【简答题】急性特发性血小板减少性紫癜实验室检查结果正常的项目是:() A出血时间 B凝血时间 C血小板计数 D血块收缩时间 E毛细血管脆性试验
【简答题】已知0<a<b,若函数 f(x)=2x+ 1 x 在[a,b]上单调递增,则对于任意x 1 ,x 2 ∈[a,b],且x 1 ≠x 2 ,使 f(a)≤ g( x 1 )-g( x 2 ) x 1 - x 2 ≤f(b) 恒成立的函数g(x)可以是( ) A. g(x)=1- 1 x 2 B.g(x)=x 2 +lnx-2 C. g(x)=-2x- 1 x D. g(x)= e x (2x+ 1...
【单选题】Teenagers do not want their parents to approve of whatever they do because they______.
A.
have already been accepted into the adult world
B.
feel that they are superior in a small way to the adults
C.
are not likely to win over the adults
D.
have a desire to be independent
【单选题】Car loans are personal loans.
【判断题】Porperty loans do have certain features which make them very attractive to banks.
【判断题】若 , ,且A > B ,则对于任意 x 都有 f ( x )≥ g ( x ) 。
【简答题】The result of inaction to your loans is to bring about bigger loans.
【简答题】How do people get into massive loans and debts?