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F-4 Messages
SOLVE (include EQN and PGM mode)cannot find the
root of the equation using the current initial guesses (see
page ). These conditions include: bad guess, solution
not found, point of interest, left unequal to right. A
SOLVE operation executed in a program does not
produce this error; the same condition causes it instead
to skip the next program line (the line following the
instruction variable).
Warning (displayed momentarily); the magnitude of a
result is too large for the calculator to handle. The
calculator returns ±9.99999999999E499 in the current
display format. (See "Range of Numbers and Overflow"
on page .) This condition sets flag 6. If flag 5 is set,
overflow has the added effect of halting a running
program and leaving the message in the display until
you press a key.
Indicates the "top" of program memory. The memory
scheme is circular, so is also the "line" after
the last line in program memory.
The calculator is running an equation or program (other
than a SOLVE or ∫FN routine).
Attempted to execute variable or ∫ d variable
without a selected program label. This can happen the
first time that you use SOLVE or ∫ FN after the message
, or it can happen if the current label
no longer exists.
A running program attempted to select a program label
(label) while a SOLVE operation was running.
A running program attempted to solve a program while
a SOLVE operation was running.
∫ A running program attempted to integrate a program
while a SOLVE operation was running.
The calculator is solving an equation or program for its
root. This might take a while.
Attempted to calculate the square root of a negative
number.