x1+1 x1+2 x1+3 .x1+n x2+1 x2+2 x2+3 .x2+n .xn+1 xn+2 xn+3 .xn+n行列式求解
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x1+1 x1+2 x1+3 .x1+n x2+1 x2+2 x2+3 .x2+n .xn+1 xn+2 xn+3 .xn+n行列式求解
x1+1 x1+2 x1+3 .x1+n x2+1 x2+2 x2+3 .x2+n .xn+1 xn+2 xn+3 .xn+n行列式求解
x1+1 x1+2 x1+3 .x1+n x2+1 x2+2 x2+3 .x2+n .xn+1 xn+2 xn+3 .xn+n行列式求解
x1+1 x1+2 x1+3 .x1+n
x2+1 x2+2 x2+3 .x2+n
.
xn+1 xn+2 xn+3 .xn+n
c3-c2,c2-c1
x1+1 1 1 .x1+n
x2+1 1 1 .x2+n
.
xn+1 1 1 .xn+n
所以当n>=3时,行列式 Dn=0 (两列相同)
n = 1 或 2 时显然.
xn+n xn+1n xn+2n xn+3n...