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For More Information - HP -32S Owner's Manual

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Given any four of these variables, the SOLVE instruction (line L04)
finds the solution for the fifth one:
L01
LBL
L
L02
STO
i
L03 FN= T
L04
SOLVE(i)
L05 VIEW(i)
L06
GTO(i)
Stores an index value that indicates which
variable had been specified as the unknown.
Selects the function defined in program T.
Solves for the indicated unknown variable
in program T.
Displays the resulting solution.
Returns to the initializing subroutine to pre
pare for another calculation.
This SOLVE operation works fine without the user supplying initial
guesses.
Limitations. The SOLVE instruction cannot call a routine that con
tains another SOLVE instruction; that is, it cannot be used recursively
(S0LVE<S0LVE) error). Nor can SOLVE call a routine that contains a
FN= label instruction (SOLVE ACTIVE error). SOLVE cannot call a
routine that contains an /FN instruction (SOLVECfFN) error), just as
/FN cannot call a routine that contains a SOLVE instruction
(/<SOLVE) error).
The SOLVE variable instruction in a program uses one of the seven
pending subroutine returns in the calculator. (Refer to "Nested Sub
routines* in chapter 6.)
For More Information
This chapter gives you instructions for solving for unknowns or roots
over a wide range of applications. Appendix C contains more detailed
information about how the algorithm for SOLVE works, how to inter
pret results, what happens when no solution is found, and conditions
that can cause incorrect results.
7: Solving for an Unknown Variable in an Equation
125

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