M 1 m 2 4 July 8, 2019 16 32 64 128 M 1 3 m 2 4 M 1 2 4 0 M 1 2 4m M 2 4m 1 m 4 M 1 2 m 2 3 m 4 7 4m 3 5m )-( m 1 )( m 2 F m )= 1 4 m 2 If m 1 m 2 4 1 m 2 4lm M 1 30 m 2 45 m 3 M 1 m 2 m 3 m 4 reason 1 m 2 41m M 1 2 4 7 M 4 1 2 m 6 5