HP 50g Graphing, 48gII Graphing manual Mslv, Msolvr

Input/Output:

		Level 1/Argument 1	Level 1/Item 1
		“message”	→
	CHOOSE,
See also:		INFORM, PROMPT
MSLV
Type:	Command
Description:	Numerically approximates a solution to a system of equations. Searches for a solution accurate to
	12 digits, regardless of the display setting. Underdetermined and overdetermined systems are
	rejected. Complex solutions will be looked for if any of the inputs contain complex values. If a
	single expression or equation is to be solved, use SOLVE instead, or for linear equations, use
	LINSOLVE. This command is similar to MSOLVR, but is more appropriate for use with the
	CAS as it automates the solution instead of working through a menu. Stepbystep mode is
	available with this command.
Access:	Numeric solve, …Ï or catalog, …µ
Input:	Level 3/Argument 1: A vector containing the equations or expressions (assumed equal to zero) to
	solve.
	Level 2/Argument 2: A vector containing the variables to solve for
	Level 1/Argument 3: A vector containing initial guesses
Output:	Level 3/Item 1: The vector containing the equations to solve.
	Level 2/Item 2: The vector containing the variables to solve for
	Level 1/Item 3: A vector representing an approximate solution to the system of equations.
Flags:	Exact mode must be set (flag –105 clear), The calculator will set approximate mode and will look
	for approximate results if exact results are not found.
	Numeric mode must not be set (flag –3 clear).
	Radians mode must be set (flag –17 set).
	Complex mode must be set (flag –103 set) if complex results are wanted.
	Stepbystep mode can be set (flag –100 set).
Example:	Find x and y values, allowing for complex solutions, that solve the following two equations. The
	first equation is an expression equal to zero, so only the expression needs to be given. Setting the
	second expression equal to a complex number forces the solver to look for complex solutions:
	sin(x)+y=0, x+sin(y)=1:
Command:	MSLV('[SIN(X)+Y, X+SIN(Y)=(1,0)]', '[X,Y]', [0,0])
Results:	('[SIN(X)+Y, X+SIN(Y)=(1,0)]', '[X,Y]', [(1.82384112611,0.),
	(-.968154636174,0.)])
See also:	DESOLVE, LINSOLVE, MSOLVR, SOLVE
MSOLVR	Command
Type:
Description:	Multiple Equation Solver Command: Gets the multipleequation solver variable menu for the set
	of equations defined by Mpar.
	The multipleequation solver application can solve		a set of two or more equations for unknown
	variables by finding the roots of each equation, one at a time.

The MultipleEquation Solver uses the list of equa tions stored in EQ. “Equations” in this context includes programs, expressions, and variable names that evaluate to a single value. The Multiple Equation Solver requires that EQ contain more than one equation — that is, the HP Solve application would include the NXEQ menu label for EQ. The solver uses EQ to create a reserved

3152 Full Command and Function Reference