The Solver menu shows all the variables in the current equation (only
X in this example).
Store the digitized estimate in variable X.
Although the digitized point contained two coordinates, the Solver
will use only the first coordinate as an estimate.
Now solve for X.
s.:ll indicates that the Solver found an
approximate solution, correct to 12 digits. If the Solver found an exact
solution, it would display the message
o. These messages, called
are discussed in HSOLVE H in the Reference
Return to the normal stack display.
Finding a Minimum or Maximum
To find the zero of an expression, the Solver samples points on the
graph, starting with your estimate, and tries to find points closer to
the x-axis. If your estimate is quite close to a
positive local minimum
negative local maximum,
there are no points nearby that are closer to
the x-axis. In this case, the Solver finds that extremum (minimum or
maximum) rather than a zero. (Generally the Solver won't Hget stuck"
at an extremum unless your estimate forces it there.)
8: The Solver