I'm having a bit of difficulty with this problem. Show that gradient(f^r) = r*f^(r-1)*gradient(f) Not even sure where to begin with this, thanks!
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Originally Posted by pakman I'm having a bit of difficulty with this problem. Show that gradient(f^r) = r*f^(r-1)*gradient(f) Not even sure where to begin with this, thanks! Let us assume is a differenciable function. Thus, Thus, . But, by the chain rule, for . Thus,
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