Texas Instruments TI-83 PLUS User Manual
Page 260
TI-83 Plus
Matrices
257
4. Press
2
Н
3
Н
3
Н
to complete the
first row for X + 2Y + 3Z = 3.
5. Press
2
Н
3
Н
4
Н
3
Н
to enter
the second row for 2X + 3Y + 4Z = 3.
6. Press
y
5
to return to the home screen. If
necessary, press
‘
to clear the home
screen. Press
y
>
~
to display the
MATRX MATH
menu. Press
}
to wrap to the end
of the menu. Select
B:rref(
to copy
rref(
to the
home screen.
7. Press
y
>
1
to select
1: [A]
from the
MATRX NAMES
menu. Press
¤
Í
. The
reduced row-echelon form of the matrix is
displayed and stored in
Ans
.
1X
N
1Z =
L
3
therefore
X =
L
3 + Z
1Y + 2Z = 3
therefore
Y = 3
N
2Z
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