Texas Instruments TI89 Developer Guide - Page 318
an END_TAG., push_internal_simplify
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276 Appendix A: System Routines - Algebra Utilities 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 */ TI-89 / TI-92 Plus Developer Guide Not for Distribution Beta Version January 26, 2001