Restriction On The Use Of; Memory Requirements; For Further Information - HP -15C Owner's Handbook Manual

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Restriction on the Use of _

The one restriction regarding the use of _ is that _ cannot be
used recursively. That is, you cannot use _ in a subroutine that is
called during the execution of _. If this situation occurs, execution
stops and
Error 7
f thereby using the advanced capabilities of both of these keys.

Memory Requirements

_ requires five registers to operate. (Appendix C explains how they
are automatically allocated from memory.) If five unoccupied registers are
not available, _ will not run and
A routine that combines _ and f requires 23 registers of space.

For Further Information

In appendix D, Advanced Use of _, additional techniques and
explanations for using _ are presented. These include:
How _ works.
Accuracy of the root.
Interpreting results.
Finding several roots.
Limiting estimation time.
Section 13: Finding the Roots of an Equation
is displayed. It is possible, however, to use _ with
will be displayed.
Error 10
193

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