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Chapter 6 - Solution To Equations; Symbolic Solution Of Algebraic Equations; Function Isol - HP 50g User Manual

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Chapter 6
Solution to equations
Associated with the 7 key there are two menus of equation-solving
functions, the Symbolic SOLVer („Î), and the NUMerical SoLVer
(‚Ï). Following, we present some of the functions contained in
these menus.

Symbolic solution of algebraic equations

Here we describe some of the functions from the Symbolic Solver menu.
Activate the menu by using the keystroke combination „Î. With
system flag 117 set to CHOOSE boxes, the following menu lists will be
Functions ISOL and SOLVE can be used to solve for any unknown in a
polynomial equation. Function SOLVEVX solves a polynomial equation
where the unknown is the default CAS variable VX (typically set to 'X').
Finally, function ZEROS provides the zeros, or roots, of a polynomial.

Function ISOL

Function ISOL(Equation, variable) will produce the solution(s) to Equation
by isolating variable. For example, with the calculator set to ALG mode, to
solve for t in the equation at
-bt = 0 we can use the following:
Using the RPN mode, the solution is accomplished by entering the
equation in the stack, followed by the variable, before entering function
ISOL. Right before the execution of ISOL, the RPN stack should look as in
Page 6-1


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