高考数学函数与导数基础练习
1.已知log1a?log1b,则下列不等式一定成立的是( )
221111
(A)()a?()b (B)? (C)ln(a?b)?0 (D)3a?b?1
43ab
2.下列函数中,在?0,???上单调递增,并且是偶函数的是( ) (A)y?x2 (B)y??x3 (C)y??lgx (D)y?2x
3.若,,,则当x>1时,a,b,c的大小关系是( )
(A)c?a?b (B)c?b?a (C)a?b?c (D)a?c?b 4.下列函数中,奇函数是( )
xf(x)?2A. B.f(x)?log2x C.f(x)?sinx?1 D.f(x)?sinx?tanx xf(x)?(x?a)(x?b)g(x)?a?b 5.函数(其中a?b)的图象如右图所示,则函数
的大致图象是( )
y f(x) -O 1 1 .. x
6.下列函数中,既是偶函数,又在区间(0,??)上单调递减的函数为( ) A.y?ln1x3 B.y?x C.y?10 D.y?cosx x27. 设定义在R上的奇函数f(x)满足f(x)?x?4(x?0),则f(x?2)?0的解集为( ) A.(?4,0)C.(??,0)(2,??) B.(0,2)(4,??) (4,??) D.(?4,4)
8. 方程log2x?x?2的解所在的区间为( )
A.(0.5,1) B.(1,1.5) C.(1.5,2) D.(2,2.5)
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9.已知f(x)是定义在R上的奇函数,当x?0时,f(x)?log2x,则f(?8)值为 ( )
A.3 B.
11C.? D.?3
3 3?1?x,x?R10.已知f(x)??,则f(f(1?i))?( )
(1?i)x,x?R?A.2?i B.1 C.3 D.3?i
x311.函数y?x的图象大致是( )
2?1
(0,b)12.若曲线y?x2?ax?b在点处的切线方程是x?y?1?0,则( )
A.a?1,b?1 B.a??1,b?1 C.a?1,b??1 D.a??1,b??1 13.下列求导运算正确的是( ) A.(x?3'31)?1?2 B.(log2x)'? xxxln22'C.(3x)'?3xlog3e D.(xcosx)??2xsinx
14.已知函数y?logax,y?logbx,y?logcx的图像如图,则( )
A.a?b?c B.c?b?a C.b?a?c D.c?a?b 15.设函数f(x)是定义在R上的奇函数,且对任意x?R都有f(x)?f(x?4),当
x?(?2,0)时,f(x)?2x,则f(2015)?f(2014)的值为( )
A.?
16.函数f(x)?11 B. C.2 D.?2 22lg(x2?1)?x?x?22的定义域为( )
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A.(??,?2)(1,??) B.(?2,1) C.(??,?1)(2,??) D.(1,2)
17.函数f(x)?ln(x2?1)的图象大致是 ( )
18.设a?log37,b?21.1,c?0.83.1,则( )
A.b?a?c B.a?c?b C.c?b?a D.c?a?b
a?2?119.已知3,b?log123,c?log11,则( ) 23A.a?b?c B.a?c?b C.c?a?b D.c?b?a
???x220.函数f(x)?2x?3,x?0?2?lnx,x?0的零点个数为( )
?A.0 B.1 C.2 D.3
21.下列函数中,在区间(0,??)为增函数的是( ) A.y?x?1 B.y?(x?1)2 C.y?2?x D.y?log0.5(x?1)
22.已知函数f?x??6x?log2x,则在下列区间中,函数f?x?有零点的是( A.?0,1? B.?1,2? C.?2,4? D.?4,??? 23.若0?x?1,则2x,?1?x?,0.2x之间的大小关系为( ) ?2????xxA.2x??0.2?x???1??2?? B.2x???1?x?2????0.2? xC.??1?x?2????0.2?x? 2xD.?0.2?x? ??1?x?2??? 2
24. 已知f(x)?ax3?bx?4,若f(2)?6,则f(?2)? ( ) A.?14 B.14 C.?6 D.10
?x2,x?025.已知f(x)???2,x?0,则f{f[f(?2)]}的值为( )
??0,x?0A.0 B.2 C.4 D.8
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) 26.函数y?ecosx(???x??)的大致图象为( )
yyyy??O?x??O?x??O?x??O?x
A B C D 27.已知函数f(x)???log2x?1(x?0),则f(0)?( )
?f(2?x)(x?0)12x?cosx,f??x?是函数f?x?的导函数,则f??x?的图象大致4A.?1 B.0 C.1 D.3 28.已知函数f?x??是( )
29.函数y?2x?x2(x?R)的图象大致为( )
x21?3lnx?1的一条切线的斜率为,则切点的横坐标为( ) 30.已知曲线y?24A.3 B.2 C.1 D.31.函数y?a1?x1 2(a?0,a?1)的图象恒过定点A,若点A在直线
11?的最小值为( ) mnmx?ny?1?0(mn?0)上,则
A.3 B.4 C. 5 D.6
32.已知y?loga?2?ax?围是 ( )
A.?0,1? B.?1,2? C.?0,2? D.?2,???
?a?0且a?1?在?0,1?上是x的减函数,则实数a的取值范
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