Casio FX-991ES Appendix - Page 42
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#103 a = -1 1 11 a11 a a- 22 12 a a a a 11 -1 = 12 - 21 11 a a a a a a 21 22 - 11 22 12 21 a a a -1 11 12 13 a a a 21 22 23 a a a 31 32 33 a a a a a a a a - - + 22 33 23 32 12 33 13 32 a a a a a a a a - + 21 33 23 31 - 11 33 13 31 a a a a a a a a - - + 21 32 22 31 11 32 12 31 = a a a 11 12 13 det a a a 21 22 23 a a a 31 32 33 a a a a - 12 23 13 22 a a a a - + 11 23 13 21 a a a a - 11 22 12 21 MAT 14(MATRIX)3(MatA)E MAT = -41-
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–41–
#103
1
4
(MATRIX)
3
(MatA)
E
MAT
=
MAT
a
11
a
12
–1
a
21
a
22
a
11
–1
=
a
11
1
a
22
–
a
12
–
a
21
a
11
a
11
a
22
–
a
12
a
21
=
a
11
a
12
a
13
–1
a
21
a
22
a
23
a
31
a
32
a
33
=
a
22
a
33
–
a
23
a
32
–
a
12
a
33
+
a
13
a
32
a
12
a
23
–
a
13
a
22
–
a
21
a
33
+
a
23
a
31
a
11
a
33
–
a
13
a
31
–
a
11
a
23
+
a
13
a
21
a
21
a
32
–
a
22
a
31
–
a
11
a
32
+
a
12
a
31
a
11
a
22
–
a
12
a
21
a
11
a
12
a
13
a
21
a
22
a
23
a
31
a
32
a
33
det