HP 35s HP 35s scientific calculator - User Guide - Page 350

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. F-4 Messages