涵数f(x)=根号下2x方-3x+1的单调第减区间是

问题描述:

涵数f(x)=根号下2x方-3x+1的单调第减区间是

f(x)=根号下2x方-3x+1=根号下[2*(x^2-3x/2+9/16-9/16)+1]
=根号下[2*(x-3/4)^2-1/8]
要单调递减:x=0
解得:x