Texas Instruments TI-89 - Push_Desolve

276
Appendix A: System Routines — Algebra Utilities
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
push_desolve
Declaration:
void
push_desolve
(EStackIndex
i
)
Category(ies):
Algebra Utilities
Description:
Pushes the particular solution of a differential equation if there are any
given initial or boundary conditions. Otherwise pushes the general solution.
If invoked via
push_internal_simplify
, the independent and dependent
variables, then the differential equation and any initial conditions are
simplified to deepest variables.
Inputs:
i
— Index of the top tag of a differential equation (perhaps with one or
two equations establishing initial or boundary conditions) on top of
its independent variable, on top of its dependent variable, on top of
an END_TAG.
Outputs:
None
Assumptions:
None
Side Effects:
None
Availability:
On AMS 2.02 and higher.
TI
-
89 / TI
-
92 Plus
Differences:
None
See Also:
None
Example:
push_quantum (END_TAG);
push_quantum (9u); /* Push dependent variable y */
push_quantum (8u); /* Push independent variable x */
push_quantum (9u); /* Push y as right side of the differential equation */
push_quantum (9u);
push_quantum (PRIME_TAG); /* Push y' as left side */
push_quantum (EQUATION_TAG);
push_desolve (top_estack); /* Push general solution y = @1 * e^x */