... trục2x33212x7x72x6x62x5x52x4x42x3x32x2x22x1x12x0x0dcctv).mmm .( 21.J.21.J.21.J.21.J.21.J.21.J.21.J.21.J.21T ++ ++ + ++ ++ + =Mà 2s23x2x3xvv==x1x0=x3x2=x7x6x5==1sx7Rx=x2,1x2x1i=x4,3x4x3i=x5,4x5x4i=44 ... J1j,1j,1211Hpppji.JJJ).MM(MM + =292s322s22z622z522z4222z4,3z3222z4,3z2222z2,12z4,3z1222z2,12z4,3z0dcxcz).mm .( 21z).R1.JR1.JR1.JRi.JRi.JRi.i.JRi.i.J .( 21T ++ ++ + ++ += 2szdcxcz.M.21T=Với 3222z622z522z4222z4,3z3222z4,3z2222z2,12z4,3z1222z2,12z4,3z0zmmR1.JR1.JR1.JRi.JRi.JRi.i.JRi.i.JM ++ ++ + ++ += c) ... con2z3232z6z62z5z52z4z42z3z32z2z22z1z12z0z0dcxcv).mm .( 21.J.21.J.21.J.21.J.21.J.21.J.21.J.21T ++ ++ + ++ += Mà 2s2z3zv=z1z0=z3z2=z6z5z4==2sz6Rz=z2,1z2z1i=z4,3z4z3i=Vậy...