怎么把x^2/(1/4)+y^2=1化为4x^2+y^2=1的过程?
问题描述:
怎么把x^2/(1/4)+y^2=1化为4x^2+y^2=1的过程?
答
1/4=0.25
1/0.25=4
X^2/(1/4)=X^2*(1/0.25)=x^2*4
∴X^2/(1/4)+Y^2=1即为4X^2+Y^2=1