HP 35s Instruction Manual page 4

hp calculators
HP 35s Solving systems of linear equations
Answer: The system has the solution X = 4, Y = -2.
Example 2: Solve the 3x3 linear system:
4 X + 5 Y +
3 X + 2 Y -
-1 X + 112 Y + 3 Z = 127
.
Solution: In either RPN or algebraic mode, make sure the "3*3 lin. solve" equation is shown at the bottom of the
equation screen and press ºÛ equation is. The display should appear like the one below before
beginning the solution by pressing ºÛ.
As in the previous example, key in each coefficient and press ¥. The keystrokes are the same in RPN
or algebraic mode.
4¥
5¥
1¥
0¥
3¥
2¥
1z¥
7¥
1z¥
112¥
3¥
127¥
After entering the last coefficient, the HP 35s displays the solution found beginning with X, as shown below.
To view the solution for Y and Z, press the down cursor key, Ø.
hp calculators
Z = 0
Z = 7
(stored into A)
(stored into B)
(stored into C)
(stored into D)
(stored into E)
(stored into F)
(stored into G)
(stored into H)
(stored into I)
(stored into J)
(stored into K)
(stored into L)
- 4 - HP 35s Solving systems of linear equations - Version 1.0
Figure 7
Figure 8
Figure 9