Texas Instruments TI89 Developer Guide - Page 987
NG_such_that_index, push_nSolve
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Appendix A: System Routines - Solver 945 push_nSolve Declaration: void push_nSolve (EStackIndex i, EStackIndex ki) Category(ies): Solver Description: If invoked via push_internal_simplify, ki and i are simplified to deepest variable, and the simplification of i is done under the temporary influence of SET_PARTIAL_SIMPLIFY to avoid costly polynomial expansions, polynomial GCDs, etc. Pushes the input if these conditions are not met. Otherwise pushes onto the estack TRUE_TAG, FALSE_TAG or an equation specifying one approximate solution of the form ki = float, found by iterative methods. Takes into account bounds specified by NG_such_that_index. Inputs: i - Indexes the top tag of an internally-simplified equation depending only on the variable in ki. ki - Indexes the top tag of a variable or an equation of the form variable = constant, representing an initial guess. Outputs: None Assumptions: None Side Effects: None Availability: On AMS 2.02 and higher. TI-89 / TI-92 Plus Differences: None See Also: push_solve, push_csolve, push_zeros, push_czeros Example: push_Float (4.0); right_side = top_estack; push_quantum_as_nonnegative_int (2u); exponent = top_estack; push_quantum (8u); /* Push variable x */ replace_top2_with_pow (exponent); /* top_estack = x^2 */ push_equals (top_estack, right_side); equation = top_estack; /* x^2 = 4 */ push_quantum (8u); /* Push variable x */ push_nSolve (equation, top_estack); /* Pushes 2.0 */ TI-89 / TI-92 Plus Developer Guide Not for Distribution Beta Version January 26, 2001
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