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1、 1 20191 1 f(x)=x+-(x:0)X 2y=xlnx 13P=2cosTsinB1 1 4(3x3 x2)nthh+t=2722 x5.15.ABCB90BA=BC=1DEACAB EDUBC,FBCDE DF 6vg(x3)x _4 7.2BI,tan.2 2 2 1 12._ sin+cos=E(0y cot 5 2 lg(1-X)13.f(x)=_ 2 x_2|_2 1 _cosx 14 yx e 15.(0,1)y2=2x16.ABCDAMPNLMABNADMNCAB=2AD=1 BMx AMPN9x 1,3AM ANAMPNr 5 3 P 2 xE5 Q=x|xa0 :
2、x|4 _ x _ 5P Q a P UQ=Q a2 2 x y 1 2 i 2 _ I 18a b(一1,0)(1)(2)M(-a 0 x=aNPOP ON(31ABQ(2,t)kQA kQ 21t 4 1 3 2 19f(x)=x3+ax2+bx,f(1)=0.3|ab f x a=-1f xx1,x2(x:x2)M(x1,f(x1),N(X2,f(x2)MNf xM,N20 f(x)XoR,f(X0)=X0 xof(x)f(x)=ax2+(b+1)x+(b1)(a0)a=1,b=2f(x)bf(x)a 5 1 16 6.xx 3,x=4 7.n 8.!:cos()-1 6 2 9.20
3、13.14.1 xsinx e2osx 15.x(0,1)x=0,yy2=2xy=1,xy2=2x510 141 6 (0,1)y=kx 1(k=0)2 2 1 k x(2k-2)x 1=0.=0,k=2 1 y=1,x=0,y x 1.2 161AMPNf(x)y=kx+1$2=2x.y=1 x T.2 7 2 9(2 x).x(2f(x)=x 4 4x 1,3 x 25 f(x)1,2(2,3f(1)=9,f(3)=X-1 fmax(X)=9 AM=3,AN=3AMPN92 19If(x)=x2 2ax b f(-1)=1-2a b=0b=2a-1 II I f(x)=丄乂3+ax2+(2
4、a T)x 3 f(x)=x2 2ax 2a-1=(x 1)(x 2a-1)f*(x)0,x-1 x 1-2a a 1,1 _2a T x,f(x)f(x)x;(A,1-2a)-(2a,1)(_1,)x _ 1 2 x AN AN=2 X x f(x)=(2 x)2(x 0)90-:x:1 x.4 17.(1)a=4 18(22(31 8 f(x)f(x)f(x)1-2a)(-1,:)(l_2a,-1)a=1,1-2a-1,,f(x)_ 0 x-1f(x)=0,f(x)R a:1,1-2a-1 f(x)(-:,-1)(1-2a(_1,1_2a)a-1,f(x)(_:,1 _2a)(-1,:)(
5、1_2a,-1)a=1,f(x)Ra:1f(x)(-:,-1)(1-2a,:)(-1,1-2a)I 1 3 2 III a=-1,f(x)=-x-x-3x 3 f(x)=X3-2x-3=0,Xr-1,x2=3 II f(x)(-:,-1)(3,13f(x)-1,X2=3M(-1,5),N(3,-9)3 J_ _ 8 9 MNy x-13 10 1 2 2-x-x 3 x 3 x3-3x2 F(x)x3 3x2 x 3 F(0)=30,F(2)=-3:0,F(x)02 F(x)02MNf(x)M,N2 201a=1,b=2 f(x)=x x3,oooo 2 x=x x 3Xi=1,x?=3 6a=1,b=-2f(x)1,3 oooo 72 2)v f(x)=ax+(b+1)x+(b1)(az 0)x=ax+(b+1)x+(b1)ax+bx+(b 1)=09:.A=b 4ab+4a0(bR)11 A=(4 a)16av 0 0vav 113 bRf(x)0v av 1 12&Cx=3 2co PCyy=2sin OxPC9.-C:1-7*11C:=10.a.11 x2 4ax 3a 0 a1tantan-x 3=0-8x-1 3