HP 48gII Graphing Calculator Manual do Utilizador descarregar pdf (Página 205)

Function SOLVEVX

The function SOLVEVX solves an equation for the default CAS variable

contained in the reserved variable name VX. By default, this variable is set to

‘X’. Examples, using the ALG mode with VX = ‘X’, are shown below:

In the first case SOLVEVX could not find a solution. In the second case,

SOLVEVX found a single solution, X = 2.

The following screens show the RPN stack for solving the two examples shown

above (before and after application of SOLVEVX):

The equation used as argument for function SOLVEVX must be reducible to a

rational expression. For example, the following equation will not processed

Function ZEROS

The function ZEROS finds the solutions of a polynomial equation, without

showing their multiplicity. The function requires having as input the

expression for the equation and the name of the variable to solve for.

Examples in ALG mode are shown next:

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HP 48gII Graphing Calculator Manual do Utilizador Página 205