若函数f(x)=|4x-x2|-a恰有3个零点,则a=______. 发布时间:2017-05-09 03:54 │ 来源:www.tikuol.com 题型:填空题 问题: 若函数f(x)=|4x-x2|-a恰有3个零点,则a=______.
题型:填空题 — How many pencils do you have? — ________________[ ]A. No pencils for me.B. It's a pencil.C. I have four pencils. 查看答案