16.(2023春•芗城区校级月考)已知函数f(x)=ex−2ax(a∈R)f(x)=e^{x}-2ax(a\in R)f(x)=ex−2ax(a∈R).(1)讨论函数f(x)f(x)f(x)的单调区间;(2)当x∈[2x\in [2x∈[2,3]3]3]时f(x)⩽0f(x)\leqslant 0f(x)⩽0恒成立,求实数的aaa的取值范围.