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Forums
Mathematics
Calculus
Solving Gradient of ||f(x)||^2 - Chain Rule
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[QUOTE="perplexabot, post: 5448425, member: 343124"] So, I was washing the dishes when I realized that [tex]2\triangledown_xf(x)^T \frac{f(x)^T}{||f(x)||_2}[/tex] is not a scalar. This is because [itex]\triangledown_xf(x)^T[/itex] is a matrix (this is actually the jacobian!). So now I have a feeling the above may be close, but still wrong. I would appreciate a confirmation tho. Thank you :) EDIT: Just realized this is my 300th post! YAY me! Love you physics forums! [/QUOTE]
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Forums
Mathematics
Calculus
Solving Gradient of ||f(x)||^2 - Chain Rule
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