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calculatorhelp - TI-83 84 Calculator Procedures General...

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TI-83, 84 Calculator Procedures General Points: As you use the TI-83 for math problems, you will see it shows the whole problem on the screen at once. This makes correcting mistakes easier; you just use the arrow keys to go back and forth through what you input. If you input a long problem into the calculator and hit enter, only to see you made one little mistake somewhere, you can hit 2 nd , Enter which will get you to Entry . That will bring back up the entire expression you input and you can use the arrow keys to make corrections. If you wanted to input something like ) 5 3 ( 7 8 2 * 3 4 - - - , it would have to be input as (4-3*2) ÷ (8-7*(3-5)), with parentheses around both the numerator and the denominator. The calculator needs to be told what is on top and what is on the bottom. This will come up frequently in this class. The ANS key, which is above the (-) key next to the ENTER key, is temporary memory. If you input 8 – 2*1.2, the answer will of course be 5.6. Then, if you hit 2 nd , x 2 , ANS, you will get the square root of the ANS wer to 8 – 2*1.2. This is a big help when your answers are decimals and you don’t want to and should not round these numbers to be used in later formulas. The ANS key ONLY holds the last thing the calculator calculated. If you calculate something and then need to use that answer in some other expression, you can use the STO> button to STO re that number in memory. For example, (2-5.63)^4 is 173.6306936 (^ is your exponent button, “^” means “to the” power) . You can then hit STO> (which is right above the ON button) , X (which is right next to the green ALPHA button) . On screen you will see
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