Texas Instruments TI-89 Developer's Manual page 295

Appendix A: System Routines — Algebra Utilities
is_neg_lead_numr_coef_re_part
Declaration: Boolean is_neg_lead_numr_coef_re_part (EStackIndex i )
Category(ies): Algebra Utilities
Description: Determines whether the lead numeric coefficient of the real part of the
internally-simplified algebraic expression indexed by i is negative. This
function is useful for exploiting symmetry (f(Lz) -> f(z)) and antisymmetry
(f(Lz) -> Lf(z)).
Inputs: i
Outputs: Returns TRUE if the lead numeric coefficient of the real part of the
internally-simplified algebraic expression indexed by i is negative.
Otherwise returns FALSE.
Assumptions: None
Side Effects: None
Availability: All versions of the TI-89 / TI-92 Plus.
TI-89 / TI-92 Plus
Differences: None
See Also: is_negative
TI-89 / TI-92 Plus Developer Guide
— Index of the top tag of an internally-simplified expression.
(continued)
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Beta Version January 26, 2001