- #1
carllacan
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Homework Statement
Find the parameter derivative of the vector function v(u, v) in, say, polar coordinates, i.e, this: http://en.wikipedia.org/wiki/Vector...tive_of_a_vector_function_with_nonfixed_bases but deriving with respect to the parameter u or v instead of the time.
Homework Equations
The Attempt at a Solution
I'd say the solution would be to do as in the link with the parameter u in the place of t, but I'm having problems at finding the u-derivative of the basis vectors. Should I apply the chain rule and then write it as de1/du = de1/dρ * dρ/du + de1/dθ * dθ/du? (with e1 being a basis vector and ρ and θ being the polar coordinates)
What are then the derivatives of the polar coordinates respect to the parameter u? The derivative of the components of v(u, v) along those coordinates? (I mean, the derivatives of P(u,v) and Θ(u, v), given that v(u,v) = P(u, v)e1 + Θ(u, v)e2)
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