Solvevx; Store; Stovx - HP 48gII Advanced User's Reference Manual

SOLVEVX

Type: Command
Description: Finds zeros of an expression with respect to the current variable, or solves an equation with
respect to the current variable. (You use the CAS modes input form to set the current
variable.)
Symbolic solve, !Î, P
Access:
Input: An expression or equation in the current variable. A list of equations and expressions can be
given too, each will be solved for the current variable.
Output: A zero or solution, or a list of zeros or solutions.
Flags: Radians mode must be set (flag –17 set).
For a symbolic result, clear the CAS modes numeric option (flag -3 clear).
If Exact mode is set (flag –105 clear) and there are no exact solutions, the command returns a
null list even when there are approximate solutions.
If complex mode is set (flag –103 set) then SOLVE will search for complex roots as well as
real ones. Complex roots are displayed according to the coordinate system selected.
Example: Solve the following expression for 0, where X is the default variable on the calculator:
3
x – x – 9
Command:
SOLVEVX(X^3-X-9)
Result:
X=2.24004098747
Note that if exact mode is set, this example returns a null list as there are no exact solutions to
the equation.
See also: LINSOLVE, SOLVE

STORE

Type: Function
Description: Stores a number in a global variable. Given an expression as input, STORE evaluates the
expression and stores the numerical value, unlike DEF which stores the expression.
Catalog, ...µ
Access:
Input: Level 2/Argument 1: A number or an expression that evaluates to a numeric value.
Level 1/Argument 2: The name of the variable in which the number is to be stored. If this
variable does not already exist in the current directory path then it is created.
Output: Level 1/Item 1: The number to which the first argument is evaluated, and which is stored in
the variable.
Flags: Exact mode must be set (flag –105 clear).
Numeric mode must not be set (flag -3 clear).
Example: Store in variable Z the result of calculating 17*Y. Assume that Y contains the integer number
2.
Command:
STORE(17*Y, Z)
Result:
34
See also: DEF, DEFINE, UNASSIGN

STOVX

Type: Command
4-68 Computer Algebra Commands
SOLVE