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15–18 Mathematics Programs
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
Flags Used:
None.
Memory Required:
348 bytes: 212 for program, 136 for variables.
Program Instructions:
1. Key in the program routines; press
when done.
2. Press
W
A to input coefficients of matrix and column vector.
3. Key in coefficient or vector value (A through L) at each prompt and press
f
.
4. Optional: press
W
D to compute determinant of 3
×
3 system.
5. Press
W
I to compute inverse of 3
×
3 matrix.
6. Optional: press
W
A and repeatedly press
f
to review the values of
the inverted matrix.
7. Press
W
M to multiply the inverted matrix by the column vector and to
see the value of X . Press
f
to see the value of Y, then press
f
again
to see the value of Z.
8. For a new case, go back to step 2.
Variables Used:
A through I Coefficients of matrix.
J through L Column vector values.
W Scratch variable used to store the determinant.
X through Z Output vector values; also used for scratch.
i Loop–control value (index variable); also used for
scratch.
Remarks:
For 2
×
2 solutions use zero for coefficients C, F, H, G and for L. Use 1 for
coefficient I.
Not all systems of equations have solutions.