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How can I plot the following equations using Matlab?:

$$x^2+y^2 = l_1^2+l_2^2+2l_1l_2cos\theta_2$$



I'm guessing I have to fix $l_1$ and $1_2$ to do this. Is that correct?

Please excuse me if I posted this question in the wrong place. I didn't see a way to write the equation with latex over at stackoverflow so I came here to ask.


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See my answer at SO, stackoverflow.com/questions/13059066/… –  bla Oct 25 '12 at 3:35
@nate thank you very much! –  Kashif Oct 26 '12 at 6:06

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