HP HP-15C

Index 219
Recalling complex numbers, 76-78
Rectangular form, 68
Refinement, iterative, 103-104, 119-121
Regression, multiple linear, 131. See also Least-squares
Regression sum of squares, 132-140
mean-adjusted, 134
Relative error, 173, 182, 183
complex, 73-75
Relative uncertainty of matrix, 100
Repeated estimation, 23-25
Residual, 103-104,110, 132, 201
Residual correction, 103-104,119-121
Residual sum of squares, 132-140
Resonance, 46
Return, rate of, 39-44
Romberg method, 46
Roots
complex, 16-17
equations with several, 10
inaccurate, 9-10
multiple, 10
not found, 9, 29, 92
numerically finding, 6, 6-44
of complex number, 69, 78-80
of equation, complex, 80-85
of quadratic equation, 191,205-211
Round-off error, 47, 49. See also Rounding error
Rounding error, 111, 113, 118, 172-211
Row interchange, 97,117
Row norm, 99,200
Saddle-point, 162
Samples, [TO, 46-47, 50, 56, 73
Samples, | SOLVE |, 7-9, 73
Scaling a matrix, 104-107, 204
Scaling a system, 107
Secant method, 7
Sign change, 8
Sign symmetry, 180, 185
Single-valued functions, complex, 69
Singular matrix, 101-102, 117-118,201