→ garyfu36:thx 10/04 00:21
推 robenten:謝謝~ 10/04 01:32
推 fong1014:感謝~ 10/05 02:36
推 ajujgrua:53(a)有點奇怪.... 10/05 23:04
P1.36 4πε0/r (C/m2) → 2ε0/ar (C/m2) <ε後面的0是下標>
P1.48 J0az (A/m2)→-J0az (A/m2); +J0az (A/m2)→J0az (A/m2)
證明→FindB
p1.53 →(a)V4=V0ax (a是向量,x是下標)
(b)V5=V0(ax-ay) (a是向量, x.y是下標)
(c)V6=(V0/5)(3ax+2ay) (a是向量, x.y是下標)
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