2.(课本改编题)f(x)=x2-2x(x∈[-2,4])的单调增区间为________;f(x)max=________. 解析:结合y=x2-2x(-2≤x≤4)的图象得增区间为[1,4],故最大值为f(4)=16-8=8.
[1,4]