HP 20B - Manual (Page 65)

Errors
65
11 Errors
Error Messages and Calculator Status
Table 11-1 Error Messages
Error Message Status
ER: Underflow The calculation generated an underflow (result of 0).
ER: x/0 Division by zero.
ER: 0/0 Zero divided by zero.
ER:
∞
*0 Infinite multiplied by zero.
ER:
∞
/
∞ Infinite divided by infinite.
ER:
√
/ (x<0) Square root of a negative number.
ER: LN (0) LN of 0.
ER: LN (x<0) LN of a negative number.
ER: ATrig(|x|>1) ASIN or ACOS of a number for which the absolute
value is > 1.
ER: 1^
∞
Attempted calculation of 1^+/-Infinite.
ER: (x<0)^
∞ Attempted calculation of the infinite power of a
negative number.
ER:
∞
^0 Attempted calculation of +/- ∞^0.
ER:
∞
^(Frac) Attempted calculation of +/- ∞^ (non-integer y).
ER: (x<0)^(Frac) Attempted calculation of (-x) ^ (non-integer y).
ER: Out of Bounds Input out of bounds.
ER: Invalid P/YR Returned by TVM functions if payments per year are
invalid (<0 or non-integer).
ER: Invalid Input Returned if arguments are invalid for any reason.
ER: Invalid I% Returned by finance functions if I is ≤ 100%.
ER: No Solution Returned when there is no solution to the problem.
ER: Many or No Solutions Returned if there is no solution, or more than one
solution to the problem.