Vector Identity (del operator)

racnna

i am completely lost as to how to go from
[tex]p^ \frac{1}{m}∇p[/tex]
to
[tex]\frac{m}{m+1} ∇p^\frac{m+1}{m}[/tex]

Muphrid

In general, the chain rule should tell you that,

[tex]\nabla p^a = a p^{a-1} \nabla p[/tex]

Choose an appropriate value for [itex]a[/itex] and see what happens.

racnna

oh wow.....nice trick