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B: More About Calculations 243
File name : 17BII-Plus-Manual-E-PRINT-030709 Print data : 2003/7/11
The iterative search for a solution sometimes takes several minutes. (You
can halt the search at any time by pressing any key except
@
) There
are four possible outcomes:
! Case 1: The calculator displays an answer. This is very likely the true
solution for the unknown variable.
There are two situations in which the Solver returns a case 1 answer:
! Case la: LEFT－RIGHT is exactly zero.
! Case lb: LEFT－RIGHT is not zero for either estimate. However,
the Solver has found two estimates that cannot get any closer
together. (Numbers that are as close together as possible are
called neighbors.) Furthermore, LEFT－RIGHT is a positive value
for one estimate and a negative value for the other estimate.
Case 1a:
is exactly 0.
Case 1b:
is not exactly 0.
and are relatively
close to
g
ether. The two estim-
ates are "nei
g
hbors".
If you want to know whether LEFT
－
RIGHT is exactly zero, press the
menu key for the unknown variable. If LEFT
－
RIGHT is not equal to
zero, the calculator displays the values of LEFT and RIGHT.
The equation could have more than one iterative solution. If the
answer does not seem reasonable, enter one or two guesses and