- #1
Ashley1nOnly
- 132
- 3
Homework Statement
F(x) has the form F(x)=f(r)x where r=|x|
A.) prove that del cross f =0
B.) Now suppose also Del •F = O. What is the most general form allowed for f(r)?
Homework Equations
The Attempt at a Solution
I have done part b but what do I need for A
F(X)= r(hat)
Fr = 1, F(theta) = F(phi)= O.
Got this out of book.
Using equation from the book ( del cross F) r
I get zero.
But what is the proof behind it
Have my answer for part a uploaded