... caùc cọng thổùc trón cho mọỹt hóỷ ba phổồng trỗnh ba ỏứn. Hóỷ xuỏỳt phaùt (3. 1) coù daỷng : =++=++=++ 34 333 232 131 2 432 32221211 431 3212111axaxaxaaxaxaxaaxaxaxa (3. 10) Giaớ sổớ a11 ... trỗnh cuọỳi cuỡng cuớa (3. 10) ta õổồỹc : (3. 10) )2( 34 3)2( 33 axa =Trong õoù ) .3, ()1(2)1(2)1()2(= jibaaajiijijTổỡ (3. 10) ta tỗm õổồỹc )2( 34 )2( 33 )2( 34 3 baax == . 28Simpo ... 1,25992105; |α - x1| ≤ 0, 13 x2 = 1 ,31 22 938 37; |α - x2| ≤ 0,027 x 3 = 1 ,32 235 3819; |α - x 3 | ≤ 0,005 x4 = 1 ,32 4268745; |α - x4| ≤ 0,00096 x5 = 1 ,32 4 632 625; |α - x5| ≤ 0,000182...