怎么把x^2/(1/4)+y^2=1化为4x^2+y^2=1的过程?

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怎么把x^2/(1/4)+y^2=1化为4x^2+y^2=1的过程?怎么把x^2/(1/4)+y^2=1化为4x^2+y^2=1的过程?怎么把x^2/(1/4)+y^2=1化为4x^2+y^2=1的过

怎么把x^2/(1/4)+y^2=1化为4x^2+y^2=1的过程?
怎么把x^2/(1/4)+y^2=1化为4x^2+y^2=1的过程?

怎么把x^2/(1/4)+y^2=1化为4x^2+y^2=1的过程?
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

因为x^2/(1/4)=x^2÷1/4=x^2×4=4x^2
所以x^2/(1/4)+y^2=1即为4x^2+y^2=1