Calculators How do I input negative exponents on a TI-89 calculator?

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To input the expression "e^(-x)" on a TI-89 calculator, it is important to use the correct minus sign. The calculator manual indicates that the minus sign for negation is different from the subtraction sign. Users should utilize the negation key, located between the decimal point and the enter key, to avoid syntax errors. This distinction can be confusing, but it is crucial for proper input.
elun
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can anyone help me to get this quotation "e^(-x)" on ti-89 ?
after i putting "-" before "x" and pressing enter , the error syntax happens ... :confused:
 
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Have you tried to read manual? It says to not use "-" but (-) (button between dot and enter).
 
ah tanx a lot i was searching for it all day long ! :wink:
 
Did you not notice there are two minus signs? :-p Just kidding. It's okay, we've all done it.
 
TylerH said:
Did you not notice there are two minus signs? :-p Just kidding. It's okay, we've all done it.

Yeah The 1st minus was the tricky one ! :biggrin:
 
I don't have a TI-89, but my guess is that one of the - keys is for subtraction, and the other is to change the sign of the operand.
 
Mark44 said:
I don't have a TI-89, but my guess is that one of the - keys is for subtraction, and the other is to change the sign of the operand.

yeah exactly :wink:
 

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