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Hokiehigh
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Multicalculus problem.
let f(x,y)=(xy)/(x+y), find the directions u and the values of Duf(1/2,3/2) for which
a) Duf(1/2,3/2) =is largest
b) Duf(1/2,3/2) = 0
c) Duf(1/2,3/2)=1
 one year ago
 one year ago
Hokiehigh Group Title
Multicalculus problem. let f(x,y)=(xy)/(x+y), find the directions u and the values of Duf(1/2,3/2) for which a) Duf(1/2,3/2) =is largest b) Duf(1/2,3/2) = 0 c) Duf(1/2,3/2)=1
 one year ago
 one year ago

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Hokiehigh Group TitleBest ResponseYou've already chosen the best response.0
directional derivative
 one year ago

Hokiehigh Group TitleBest ResponseYou've already chosen the best response.0
any ideas
 one year ago

cinar Group TitleBest ResponseYou've already chosen the best response.1
Df=(2y/((x+y)^2,2x/(x+y)^2) (2y/((x+y)^2,2x/(x+y)^2).(1/2,3/2)
 one year ago

cinar Group TitleBest ResponseYou've already chosen the best response.1
(2y/((x+y)^2,2x/(x+y)^2).(1/2sqrt2,3/2sqrt2)
 one year ago

Hokiehigh Group TitleBest ResponseYou've already chosen the best response.0
I think I see what your saying. Thank you
 one year ago

cinar Group TitleBest ResponseYou've already chosen the best response.1
sorry (2y/((x+y)^2,2x/(x+y)^2).(1/sqrt10,3/2sqrt10)
 one year ago

cinar Group TitleBest ResponseYou've already chosen the best response.1
(2y/((x+y)^2,2x/(x+y)^2).(1/sqrt10,3/sqrt10)
 one year ago

cinar Group TitleBest ResponseYou've already chosen the best response.1
2/sqrt10(1/(x+y)) I guess this is the answer..
 one year ago

cinar Group TitleBest ResponseYou've already chosen the best response.1
I just looked at this web site http://tutorial.math.lamar.edu/Classes/CalcIII/DirectionalDeriv.aspx#PD_DirectDeriv_Ex2a
 one year ago
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