f(x1,x2,x3)=(x1-x2)^2+(x2-x3)^2
=x1^2 - 2x1x2 + 2x2^2 - 2x2x3 + x3^2
A =
1 -1 0
-1 2 -1
0 -1 1
二次型f(x1,x2,x3)=(x1-x2)^2+(x2-x3)^2的矩阵是什么,怎么求?
二次型f(x1,x2,x3)=(x1-x2)^2+(x2-x3)^2的矩阵是什么,怎么求?
数学人气:335 ℃时间:2020-02-05 10:57:42
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