March 15th, 2009, 06:57 PM  #1 
Newbie Joined: Mar 2009 Posts: 5 Thanks: 0  Multi variable chain rule
Given q = f(r,s) r(t) = 3 + 2t s(t) = 2  6t What is q '(0) Any help would be nice. 
March 16th, 2009, 01:15 PM  #2 
Senior Member Joined: Dec 2008 Posts: 251 Thanks: 0  Re: Multi variable chain rule
The Multivariable Chain Rule states: This formula holds because the value of is impacted by the changes in both and as we increase . In our case, 
March 16th, 2009, 07:50 PM  #3 
Newbie Joined: Mar 2009 Posts: 5 Thanks: 0  Re: Multi variable chain rule
So with information given we cannot find q '(0) because we don't know the partial derivatives?

March 17th, 2009, 05:14 AM  #4 
Senior Member Joined: Dec 2008 Posts: 251 Thanks: 0  Re: Multi variable chain rule
They might want you to include and in the formula.

March 17th, 2009, 10:24 AM  #5 
Newbie Joined: Mar 2009 Posts: 5 Thanks: 0  Re: Multi variable chain rule
Alright thanks for the help.


Tags 
chain, multi, rule, variable 
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