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Математика
INDEX
x y z=
x y z=
x y z=
1-31
-121
2-1-3
=1* 2*(-3)+2*(-3)*1+(-1)*(-1)*1-
-1*(-1)*1-(-1)*(-3)*(-3)-2*2*1=
=(-6)+ (-6)+1-(-1)-(-9)-4=-5

A11
21
-1-3
=-5A12
-11
2-3
=1A13
-12
2-1
=-3

A21
-31
-1-3
=10A22
11
2-3
=-5A23
1-3
2-1
=5

A31
-31
21
=-5A32
11
-11
=2A33
1-3
-12
=-1

A-1=
-5
-5
10
-5
-5
-5
1
-5
-5
-5
2
-5
-3
-5
5
-5
-1
-5