怎样算从4x^2-9y^2=100到x^2/25-y^2/(100/9)=1
问题描述：
怎样算从4x^2-9y^2=100到x^2/25-y^2/(100/9)=1
答
将4x^2-9y^2=100等式两边同时除以100
即得x^2/25-y^2/(100/9)=1那4x^2+ky^2=1怎么化x^2/(1/4)+y^2/(1/k)=1