HP HP-15C Advanced Functions Handbook

1 48 Section 4: Using Matrix Operations
Keystrokes Display
m
mr
QDCE]
3.6759
3.675891055
13.51217505
1.245864306
0.379758235
0.413552221
Calculates current
estimates and q.
Calculates residual sum of
squares q2.
Displays b{n).
Displays b(^\s b$1}.
These estimates agree (to within 3 in the ninth significant digit)
with the results of the preceding example, which uses the normal
equations. In addition, you can include additional data and update
the parameter estimates. For example, add this data from 1968:
CPI = 4.2, PPI = 2.5, and UR = 3.6 .
Keystrokes Display
1.000000000
2.000000000
3.000000000
4.000000000
1.000000000
5.000000000
3.700256908
13.69190119
1.581596327
0.373826487
0.370971848
0.3710
0.3710
Enters row weight for new
row.
Enters jc12 i-
Enters jc12 2-
Enters x^3.
Enters y12.
Updates factorization.
Calculates residual sum of
squares.
Displays b{l2\s 6^12).
Displays ^12).
Deactivates User mode.
Eigenvalues of a Symmetric Real Matrix
The eigenvalues of a square matrix A are the roots X; of its
characteristic equation
det(A - XI) = 0.

HP HP-15C Specifications

General

Brand	HP
Model	HP-15C
Category	Calculator
Language	English