【简答题】已知函数f(x)=x 2 +(a+1)x+lg|a+2|(a∈R,且a≠-2). (1)写出一个奇函数g(x)和一个偶函数h(x),使f(x)=g(x)+h(x); (2)对(1)中的g(x).命题P:函数f(x)在区间[(a+1) 2 ,+∞)上是增函数;命题Q:函数g(x)是减函数;如果命题P、Q有且仅有一个是真命题,求a的取值范围; (3)在(2)的条件下,求f(2)的取值范围.
【单选题】Everybody dreams. Some people think dreams can tell us about the future. Other people think dreams tell us about ourselves. It ’ s like our 1 is talking to us. Why are dreams 2 strange and hard ...
【简答题】已知函数f(x)=x 2 +(a+1)x+lg|a+2|(a∈R,且a≠-2) (I)若f(x)能表示成一个奇函数g(x)和一个偶函数h(x)的和,求g(x)和h(x)的解析式; (II)命题P:函数f(x)在区间[(a+1) 2 ,+∞)上是增函数;命题Q:函数g(x)是减函数.如果命题P、Q有且仅有一个是真命题,求a的取值范围; (III)在(II)的条件下,比较f(2)与3-lg2的大小.
【简答题】已知函数f(x)=x 2 +(a+1)x+lg|a+2|(a∈R,且a≠-2). (I)若f(x)能表示成一个奇函数g(x)和一个偶函数h(x)的和,求g(x)和h(x)的解析式; (Ⅱ)命题P:函数f(x)在区间[(a+1) 2 ,+∞)上是增函数;命题Q:函数g(x)是减函数.如果命题P、Q有且仅有一个是真命题,求a的取值范围.
【简答题】bystander; coach; collision; furious; license; mechanic; option; punishment; verdict; wage 1. My father was _______ because someone drove into his car while it was packed. 2. The job’s ...
【单选题】在现行PC机中,常用的16位系统总线是( )。
【单选题】如果f(x)是奇函数,g(x)是偶函数,且f(x)+g(x)=-x 2 +2x-3,那么函数f(x)-g(x)=( )
【简答题】Everybody dreams. Some people think dreams can tell us about the future. Other people think dreams tell us about ourselves. It’s like our 1 is talking to us. Why are dreams 2 strange and hard to...
【简答题】如果函数f(x)与g(x)的定义域相同,且f(x)是奇函数,g(x)是偶函数,请说明函数F(x)=f(x)g(x)是奇函数。
【简答题】完形填空。 Everybody dreams. Some people think dreams can tell us about the future. Other people think dreams tell us about ourselves. It's like our 1 is talking to us. Why are dreams 2 strange and hard to...