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【简答题】
已知a≠0,证明关于x的方程ax=b有且只有一个根.
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【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(1)和 1 6 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). (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.
【简答题】短文填词。 (1)O Sundays, we like (2)g to the movies. My (3)f movies are (4)t . Some people think they're scary but I like (5)t very much. I don't like (6)d because they are boring. But some people like the...
【简答题】设a∈R,f(x)为奇函数,且 f(2x)= a? 4 x - a -2 4 x +1 (1)试求f(x)的反函数f -1 (x)的解析式及f -1 (x)的定义域; (2)设 g(x)=lo g 2 1+x k ,是否存在实数k,使得对于任意的 x∈[ 1 2 , 2 3 ] ,f -1 (x)≤g(x)恒成立,如果存在,求实数k的取值范围.如果不存在,请说明理由.
【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 ...
A.
body
B.
spirit
C.
brain
D.
heart
【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】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 often strange and hard to u...
【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 ...
【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...
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