Partial derivatives with constrained variables

  • Thread starter jimbo71
  • Start date
  • #1
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Homework Statement


x^2+y^2=r^2
y-rcos(pheta)
find (partialy/partialr)subscribt phetal, find (partialy/partialpheta)subscribtx, and find (partialy/partial)subsribt pehta


Homework Equations


im not sure how to write this partial in chain rule form. i think the first one (partialy/partialr)subscritpheta would simply be cos(pheta). however i have no idea how to write out the chair rule forumulas for the second and third one. please help




The Attempt at a Solution

 

Answers and Replies

  • #2
81
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please help asap !
 

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