(A;E)=
021
211
111
100
010
001
r1-r3,r2-r3
-110
100
001
100
010
-1 -11
r2+r1
-100
010
001
110
010
-1 -21
C=
110
010
-1 -21
X=CY,
f=-y1^2 + y2^2 + y3^2
用合同變換法化下列二次型為標(biāo)準(zhǔn)型,并寫出所用的替換矩陣f(x1,x2,x3)=x2^2+x3^2+4x1x2+2x1x3+2x2x3
用合同變換法化下列二次型為標(biāo)準(zhǔn)型,并寫出所用的替換矩陣f(x1,x2,x3)=x2^2+x3^2+4x1x2+2x1x3+2x2x3
數(shù)學(xué)人氣:613 ℃時(shí)間:2020-02-06 01:35:28
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