高一数学第一学期测试题

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平坝一中高一第一学期第二章测试题

班级_______________  姓名_______________   得分_______________

一、填空题:(5×12

⑴、函数y=χ2 bχ+c∈[0, +∞)是单调函数的充要条件是(    

Ab0   Bb0   Cb0    Db0

⑵、设函数f (χ)   ,f (χ0) 1,则χ0的取值范

围是·······················································(    

A、(-11          B、(-1,+∞)

C、(-∞,-2)∪(0,+∞) D、(-∞,-1)∪(1,+∞)

⑶、已知f (χ5) logχ,则等于f (2) ·························(    

Alg2    Blg32    Clg    Dlg2

⑷、设a40.9, b80.48c=( 1. 5,则·····················(    

Acab  Bbac  Cabc  Dacb

⑸、函数y2-χ1(χ>0)的反函数是······················(    

Alg 2,χ∈(12    B、-lg 2,χ∈(12

Clg 2,χ∈(12    D、-lg 2,χ∈(12

⑹、已知函数yaχa0,且a0)在[01]上的最大值与最值之和为4,则a的值 ·······················································(    

A3      B4       C2       D

⑺、若集合M={ y y=2-χ}P={ y y= },χ≥1MP=      

A { y y 1}          B{ y y 1}  

C { y y 0}          D{ y y 0}  

⑻、ylog 0.3(4χ-3)的定义域是······························(    

A( ,+∞)   B( 1,+∞)   C(-∞,1)    D( ,1)

⑼、函数y的值域是·································(    

A[ 0, +∞)  B( 0, +∞)  C( 0, 1     D( 0, 1 ]

⑽、y()的单调增区间是 ························(    

A[1]   B、(-∞,-1]  C[2,+∞)  D[2]

⑾、ylog (-χ22χ+3)的递减区间是 ···············(    

A(3,1)  B、(-∞,-1 C(-∞,-3  D(-∞,-1

⑿、当a1时,函数ylog aχ与y=(1a)χ的图象只可能是(    

A         B        C       D

二、填空题(4×5

⒀方程log 4 (3χ-1)= log 4 (χ-1)= log 4 (3+χ)的解是__________________

y[χ∈(-1,+∞)]的图象与其反函数的图象的交点坐标为__________________

⒂在集合A={χ χ2}B={χ χa},且AB,则实数a的取值范围是__________________

 三个数的大小关系是__________________

⒄函数y=χ2-χ-6,χ∈[32]的最大值是__________________,最小是__________________

三、解答题(70分)

⒅、解不等式(第①题6分,第②题10分)

1           log (χ2-χ-2) log (χ-1) 1

⒆、证明:函数f (χ) aχ+(a1)在(-1,+∞)上为增函数。(14分)

⒇、某单位进贺单价为45元,若按50元一个销售,能卖出50个,若销售单价每涨1元,销售量就减少2个,为了获得最大利润,此商品的最佳售价应为每个多少元?(40分)