Using The Multiple-Equation Solver - HP 50g User Manual

Press
can use © PICT (or © PICTURE) to view the picture again after you
have quit the Equation Library.
Press a menu key or to view other equation information.

Using the Multiple-Equation Solver

The Equation Library starts the Multiple-Equation Solver automatically if the
equation set contains more than one equation. However, you can also start it up
explicitly using your own set of equations (see "Defining a set of equations" on
page 27-8).
When the Equation Library starts the Multiple-Equation Solver, it first stores the
equation set in EQ and stores a copy of the equation set, the list of variables,
and additional information in Mpar. Mpar is then used to set up the Solver
menu for the current equation set. (Note that although you can view and edit
EQ directly like any other variable, Mpar can only be edited indirectly (by
executing commands that modify it) as it is structured as library data dedicated
to the Multiple-Equation Solver application.)
The following table summarizes the actions for the solver menu keys. The L
key shows additional menu labels.
Operation
Store value
Solve for value
Recall value
to store the picture in PICT, the graphics memory. Then you
Solver Menu Keys
Key
!!!!!!!!!X!!!!!!!!!
%%X$$
! !!!!!!!!!X!!!!!!!!!
! %%X$$
... !!!!!!!!!X!!!!!!!!!
... %%X$$
Creates a variable if necessary, and
makes it user-defined. If the value has
no units, the units of the previous value
are appended, if any.
Creates a variable if necessary, solves
for its value, and makes it not user-
defined.
Recalls value of variable to the stack.
Action
Page 27-6