1 確認 ▽(f(r)g(r))
=(▽f(r))g(r)+f(r)(▽g(r))
2 確認 ▽(A(r)・B(r))
=(A(r)・▽)B(r)+(B(r)・▽)A(r)
+A(r)×(▽×B(r))+B(r)×(▽×A(r))
3 確認 ▽・(f(r)A(r))
=(▽f(r))・A(r)+f(r)(▽・A(r))
4 確認 ▽・(A(r)×B(r))
=(▽×A(r))・B(r)−A(r)・(▽×B(r))
=(▽×A(r))・B(r)−(▽×B(r))・A(r)
5 確認 ▽×(f(r)A(r))
=(▽f(r))×A(r)+f(r)(▽×A(r))
6 確認 ▽×(A(r)×B(r))
=(▽・B(r))A(r)+(B(r)・▽)A(r)
−(▽・A(r))B(r)−(A(r)・▽)B(r)
7 確認 ▽・(▽f(r))=(▽・▽)f(r)=▽2f(r)=△f(r)
8 確認 ▽×(▽×(A(r))=▽(▽・A(r))−▽2A(r)
9 確認 ▽・(▽×(A(r))=0
A 確認 ▽×(▽f(r))=0
B 確認 △(f(r)A(r))
=(△f(r))A(r)+f(r)(△A(r))+2(▽f(r)・▽)A(r)