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搜题
【单选题】
急性阑尾炎病人腹痛典型的特点是
A.
右上腹隐痛
B.
转移性右下腹痛
C.
左上腹刀割样疼痛
D.
腹部绞痛
E.
全腹压痛、反跳痛
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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.
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【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)=lo g a 1-x 1+x (0<a<1) . (1)求函数f(x)的定义域D,并判断f(x)的奇偶性; (2)如果当x∈(t,a)时,f(x)的值域是(-∞,1),求a与t的值; (3)对任意的x 1 ,x 2 ∈D,是否存在x 3 ∈D,使得f(x 1 )+f(x 2 )=f(x 3 ),若存在,求出x 3 ;若不存在,请说明理由.
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【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】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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