http://en.wikipedia.org/wiki/Vector_Laplacian
A_{x}=x^{2}z^{3}
A_{y}=0
A_{z}=0\nabla^{2}A_{x}=2z^{3}
\Rightarrow\nabla^{2}A=2z^{3}i
\Rightarrow-\nabla^{2}F=-2z^{3}i
is this not right?
Homework Statement
I have repeated this problem over and over again so either the question is wrong or my likely its my method that's at fault. Please can someone check this for me.
Prove this is true:
\nabla\times(\nabla \times F)=-\nabla^{2}F+\nabla(\nabla.F)
for F=x^{2}z^{3}i...
Homework Statement
Below is a past paper question from a paper i am working through in preperation for my exams. I am having particular trouble with this question, it doesn't seem as straight forward and formulated as other questions. I am unsure if anything i have done is right so any help...