Functions of several variables

Posted by Arushi :)) on Apr 29, 2014; 12:03pm
URL: http://discussion-forum.276.s1.nabble.com/Functions-of-several-variables-tp7588048.html

F(x,y) = 2/3lnx+ 1/3 lny
i)Find dz/dt when z = F(x,y) , x = e^(3t) and y = 1+e^(-3t).
ii)Determine dz/dt as t tends to infinity .