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1. The problem statement, all variables and given/known data

Beginning with r=[a(1-e^{2})]/(1+e*cos [tex]\theta[/tex]) and Kepler's second law, derive general expressions forv_{r}andv_{[tex]\theta[/tex]}for a massm_{1}in an elliptical orbit about a second massm_{2}. The final answers should be functions of P, e, a, and [tex]\theta[/tex] only.

P=orbital period

e=eccentricity

a=semimajor axis

That's supposed to bev(subtheta) and cosine of theta!

2. Relevant equations

A'(t)=L/(2*[tex]\mu[/tex])

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# Homework Help: Deriving Vr and V(sub-theta) from Kepler's second law and

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