“+”号打不出来么?
|1+a 1 1| = |1+a 1 1| = |1+a+a/b+a/c 1 1| 【说明:c1+c2*a/b+c3*a/c】
1 1+b 1 -a b 0 0 b 0
1 1 1+c -a 0 c 0 0 c
=(1+a+a/b+a/c)*bc=bc+abc+ac+ab
=abc+ab+bc+ca
“+”号打不出来么?
|1+a 1 1| = |1+a 1 1| = |1+a+a/b+a/c 1 1| 【说明:c1+c2*a/b+c3*a/c】
1 1+b 1 -a b 0 0 b 0
1 1 1+c -a 0 c 0 0 c
=(1+a+a/b+a/c)*bc=bc+abc+ac+ab
=abc+ab+bc+ca