I was asked execute the proof shown in figure 1. I managed to prove what is in figure 2, but cannot make any headway on figure 3. Please Help.

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- August 28th 2008, 03:03 PMJensenTough Gradient Proof. Help!
I was asked execute the proof shown in figure 1. I managed to prove what is in figure 2, but cannot make any headway on figure 3. Please Help.

- August 29th 2008, 09:05 AMMoo
- August 29th 2008, 05:58 PMJensen
Thanks for the help. I also found a vector identity that worked nicely also.