A n+1-B n+1=8 An - 6 Bn -(6 An - 4 Bn )=2(An - Bn)所以设Cn=An - Bn那么Cn+1=A n+1-B n+1所以Cn+1/Cn=2所以Cn是等差数列,q=2C1=A1-B1=2所以Cn=An - Bn=2^n代如A n+1 = 8 An - 6 Bn 所以 A n+1=8 An - 6 Bn =2An+6...