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205

Appendix A

Error Conditions

If you attempt a calculation containing an improper operation  say division

by zero  the display will show Error and a number. To clear an error

message, press any one key. This also restores the display prior to the Error

display.

The HP-15C has the following error messages. (The description of Error 2

includes a list of statistical formulas used.)

Error 0: Improper Mathematics Operation

Illegal argument to math routine:

÷, where x = 0.

y, where:

 out of Complex mode, y < 0 and x is noninteger;

 out of Complex mode, y = 0 and x ≤ 0; or

 in Complex mode, y = 0 and Re(x) ≤ 0.

¤, where, out of Complex mode, x < 0.

∕, where x = 0.

o, where:

 out of Complex mode, x ≤ 0; or

 in Complex mode, x = 0.

Z, where:

 out of Complex mode, x ≤ 0; or

 in Complex mode, x = 0.

,, where, out of Complex mode, │x│> l.

{, where, out of Complex mode, │x│> l.

O ÷, where x = 0.

l ÷, where the contents of the addressed register = 0.

∆, where the value in the Y-register is 0.

H \, where, out of Complex mode, x< 1.

H ], where, out of Complex mode, │x│> 1.

c p, where:

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HP 15C Manuale Utente Pagina 205