高一数学奇偶性、单调性综合练习题

4.81f(x)=ax2+bx+c(a0)g(x)=ax3+bx2+cx()A.B.C.D.2f(x)=ax2+bx+3a+b[a-1,2a]a=__________,b=_________3y=f(x)Rx0f(x)=x2-2x,f(x)R()A.y=x(x-2)B.y=x(|x|-1)C.y=|x|(x-2)D.y=x(|x|-2)4f(x)=x5+ax3+bx-8f(-2)=10f(2)()A.-26B.-18C.-10D.105f(x)=111122xxxx()A.B.C.D.6y=f(x)(xRx0)x1,x2f(x1x2)=f(x1)+f(x2)f(x)