C | 0n |
C | 1n |
C | rn |
C | nn |
令a=1,b=-1,則(1?1)n=
C | 0n |
C | 1n |
C | 2n |
C | 3n |
C | nn |
即0=(
C | 0n |
C | 2n |
C | 1n |
C | 3n |
C | 0n |
C | 2n |
C | 1n |
C | 3n |
即在(a+b)n的展開式中,奇數(shù)項(xiàng)的二項(xiàng)式系數(shù)的和等于偶數(shù)項(xiàng)的二項(xiàng)式系數(shù)的和.
C | 0n |
C | 1n |
C | rn |
C | nn |
C | 0n |
C | 1n |
C | 2n |
C | 3n |
C | nn |
C | 0n |
C | 2n |
C | 1n |
C | 3n |
C | 0n |
C | 2n |
C | 1n |
C | 3n |