Page 33 - Trigonometry

given by,

1
1 1 1
= | 2 2 1|
⊿
2
3 3 1

In this case,

1 −4 5 1
= | 5 −4 1|
⊿
2
8 6 1

To evaluate this determinant, use the MATRIX feature

on your fx calculator (w6). Then select, 11

Now enter the values from the determinant,

z4=5=1=5=z4=1=

8=6=1=C

All these numbers have gone into matrix A, now we
want to calculate the determinant of this matrix.

Enter the keystrokes,

0.5q(MATRIX)7q(MATRIX)3)=

29