... (1 + g )m) (e (e/ ) e gl (1 + g )ne ) + ữ 2 ữ ữ ( p2 + k ) - m e ứ l * p2 + k + m e ổ p - k + mm ỗ + ỗ( mg l (1 + g ) (E / )n m) (ne gl (1 + g )e) + e ỗ ỗ ( p1 - k )2 - m m ỗ ố ữ + ( mg (1 + g ... , s )g (g (1 + g )) g e( q , s ) e (q1, s1 )g l (1 + g )ne (q2, s ) = e + (q1, s1 ) g g l (1 + g ) ne (q2, s ) + e + l 2 e 0+ + + + l ( + ) = ne (q2, s )g g l (1 + g ) 1 g 0e( q1, s1 ) , (1. 19) ... p1 ) 0, ( ) ị m e2 + m m - 2m mE + 2k - m m + E - p2 cosq 0, ị k0 Ê m e2 + m - 2m mE m ( m m - E + p2 cos q ) = m m (E m - E ) m m - E + p2 cos q 26 ị (k ) max Trong ú E m = = m m (E m - E...