计算行列式,a^2 (a+1)^2 (a+2)^2 (a+3)^2b^2 (b+1)^2 (b+2)^2 (b+3)^2c^2 (_数学解答

计算行列式,
a^2 (a+1)^2 (a+2)^2 (a+3)^2
b^2 (b+1)^2 (b+2)^2 (b+3)^2
c^2 (c+1)^2 (c+2)^2 (c+3)^2
d^2 (d+1)^2 (d+2)^2 (d+3)^2

人气：445 ℃　时间：2020-02-03 08:53:03

解答

D=
a^2 2a+1 2a+3 2a+5
b^2 2b+1 2b+3 2b+5
c^2 2c+1 2c+3 2c+5
d^2 2d+1 2d+3 2d+5
(col4=col4-col3,col3=col3-col2,col2=col2-col1)
=
a^2 2a+1 2 2
b^2 2b+1 2 2
c^2 2c+1 2 2
d^2 2d+1 2 2
(col4=col4-col3,col3=col3-col2)
=0
(因为后两列相同)