Let X be a normed vector space. If C is a closed subspace x is a point in X not in C, show that the set C+Fx is closed. (F is the underlying field of the vector space).
I cannot figure out how to solve this problem:
The calculation of the magnetic moment of a current loop leads to the line integral (around a closed loop)
INT r x dr
a) Integrate around the perimeter of a current loop (in the xy plane) and show that the scalar magnitude of this line...