函数f(x)=ax+1x+2(a为常数)在(-2,2)内为增函数,则实数a的取值 发布时间:2017-04-26 07:46 │ 来源:www.tikuol.com 题型:填空题 问题: 函数f(x)=ax+1x+2(a为常数)在(-2,2)内为增函数,则实数a的取值范围是______.
题型:填空题 ---Hi, Kate. You look tired. What’s the matter? --- I _______well last night.A.wasn’tB.don’t sleepC.haven’t sleptD.didn’t sleep 查看答案