... ũũ=ữứửỗốổ==H0H0 2 2dxdt)t.x(dym 2 1dxmv 2 1K ()[]ũwwH0 2 22 dxxymtcos 2 1 ()[]ũw=H0 2 2maxdxxym 2 1K T"U!YW l6a )u);R = ũũ=ỳỷựờởộ=HHVHVH*HGVEJVHEJs0 2 2 2 0 2 ).( 2 1 2 1= ... " U!oW -P *?)6 *25 )N Q,A _64 06k)6 @ý H2); /0R )164(xHx1xFEg4HH2x31J2xHx1xFEg4HH2x31J4xHx1FEg4HJH04i31 2 iH04 2 i 2 1 2 2iH04i41 2 i-ùỵùýỹùợùớỡDỳỳỷựờờởộữứửỗốổ-gw-ữứửỗốổ+-==ùỵùýỹùợùớỡDữứửỗốổ-gw-ữứửỗốổ+-ùỵùýỹùợùớỡDỳỳỷựờờởộữứửỗốổ-gw-ồồồ ... !o9 []ũ=H0 2 maxdx)x("yEJ 2 1V T"U!#W J+, =B2 -w)6 @A%* ' (2 *2B) )u); @./); Cú* C, IA,) 6y V:,H= K:,H ;4(4 C, /0R )]([)](''[ 2 h 2 2ũũ=H,6VHHG:VHHGEJ...