... sóng (3 = λϕλdIJ .cos 2 21∫= 2 2cosϕλII = 2 λ 2 λµλ 12 2+=kµµ8, 04, 0 12 2≤≤+k5 ,22 5,18, 04, 0 4, 018.011≤≤≤≤≤=≤kkkµλµ⇒ hay µ5,0 2 11==kClick to buy NOW!PDF-XChange ... 22 22 cos ( ) sin 2 .sin 2 sin 2 cos ( ) sin 2 .sin 2 .cos 2 ooIIIIϕβα α βαβα α β=−−=++ với Io = a2 x y 0=ϕ 2 0πϕ<< 2 πϕ= πϕπ<< 2 πϕ= 2 3πϕπ<< ... α x o y β A P H. 52 ()[]λβααβϕλdIdJ .sin.2sin.2sincos 2 22 −−=λϕλdIJ 2 2 2 sin∫=λλλλϕλϕλdIdIdIJJ sin.cos 2 2 2 2 21 ∫=∫+∫=+Click to buy NOW!PDF-XChange...