MathGroup Archive 2007

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Re: Polar Plot


Miguel wrote:
> How can I to plot a polar expresion in implicit form. For example,
> r^2==3+2*r*Cos[teta]

I believe that there is no built-in function for this, so either try to 
write it in an explicit form and use PolarPlot[],

Solve[r^2 == 3 + 2*r*Cos[teta], r]

or write the expression in Cartesian coordinates and use ContourPlot[]

r^2 == 3 + 2*r*Cos[teta] //. {r -> Sqrt[x^2 + y^2], Cos[teta] -> x/r}

-- 
Szabolcs


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