35.已知函数f(x)=2x3+3(a−2)x2−12axf(x)=2x^{3}+3(a-2)x^{2}-12axf(x)=2x3+3(a−2)x2−12ax.(1)当a=0a=0a=0时,求f(x)f(x)f(x)在[−2[-2[−2,4]4]4]上的最值;(2)讨论f(x)f(x)f(x)的单调性.