Question 1134405
{{{r=2/(1+sin(theta))*(1-sin(theta))/(1-sin(theta))}}}
{{{r=(2-2sin(theta))/(1-sin^2(theta))}}}
{{{r=(2-2sin(theta))/(cos^2(theta))}}}
{{{r^2=(2r-2rsin(theta))/(cos^2(theta))}}}
{{{r^2(cos^2(theta))=2r-2rsin(theta)}}}
{{{(rcos(theta))^2=2r-2rsin(theta)}}}

Substitute {{{y=rsin(theta)}}}, {{{x=rcos(theta)}}}, and {{{r=sqrt(x^2+y^2)}}}

{{{x^2=2sqrt(x^2+y^2)-2y}}}
{{{x^2/2+y=sqrt(x^2+y^2)}}}
{{{x^4/4+yx^2+y^2=x^2+y^2}}}
{{{x^4/4+yx^2=x^2}}}
{{{x^2(x^2/4+y)=x^2}}}
{{{x^2/4+y=1}}}
{{{y=-x^2/4+1}}}



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