二次函数fx=2ax^2-ax+1(a
问题描述:
二次函数fx=2ax^2-ax+1(a
答
二次函数fx=2ax^2-ax+1(ax1x2>0
x2-x1>0
2ax1^2=2ax2^2
fx1-fx2=a(x2-x1)fx1