What kind of music do you like to _____? 发布时间:2017-05-25 04:46 │ 来源:www.tikuol.com 题型:选择题 问题: What kind of music do you like to _____?[ ]A. hear B. heard C. listen D. listen to
题型:选择题 定义在实数R上的函数y=f(x)是偶函数,当x≥0时,f(x)=-4x2+8x-3.(Ⅰ)求f(x)在R上的表达式;(Ⅱ)求y=f(x)的最大值,并写出f(x)在R上的单调区间(不必证明). 查看答案