函数y1=a1x2和函数y2=a2x2满足a1a2大于0,且当y1=y2=y0时,y1,y2对应一个自变量的值分别是x1x2,且/x1/>/x2/,试比较/a1//a2/的大小
问题描述:
函数y1=a1x2和函数y2=a2x2满足a1a2大于0,且当y1=y2=y0时,y1,y2对应一个自变量的值分别是x1x2,且/x1/>/x2/,试比较/a1//a2/的大小
答
y1=a1x2,y2=a2x2,当y1=y2=y0时,有y0=a1x1=a2x2
a1a2>0,且/x1/>/x2/,∴|a1|/|a2|=|x2|/|x1|