Question about Texas Instruments TI-83 Plus Calculator

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After putting in a fractionproblen where is the answere key

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There is a key at the bottom right called "enter". That is your = key.

Posted on Feb 20, 2009

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I have a TI-84 and when i put a negative number it appears Ans before how can change that?


Use the (-) key to the right of the decimal point key when entering a negative number. The - key to the right of the 6 key is for subtracting something from something else. In order to subtract from something, if you don't specify anything then the calculator uses the previous answer as designated by "Ans." The same thing happens with the + key for example, because it adds something to something else.

Feb 01, 2014 | Texas Instruments TI-84 Plus Silver...

1 Answer

Answer always appearing


Minus and change-sign are two completely different things. Minus is used to subtract one number from another. When you press minus when the input line is empty, your telling the calculator to subtract. The only way it can subtract the number you're about to put in is to subtract it from something else, and that something else is the previous answer, hence the "Ans."

If you want to input a negative number, use the change-sign key. If you want to subtract one number from another number, use the minus key.

Try pressing the plus key when the input line is empty. You'll get Ans+ in this case as well, The same with multiply and divide, among others, and for the same reason.

Sep 23, 2013 | Texas Instruments TI-84 Plus Calculator

2 Answers

Where is the exponent key on the 531x


If you mean the key to raise a number to an exponent, it's the key marked "y^x", two keys above the "7" key. If you mean the key to enter an exponent of ten, it's the key marked "Exp", just above the "7" key.

Feb 18, 2013 | Sharp el-531x scientific calculator

1 Answer

Hi, I have a Sharp ELW535 Calculator and by accident I changed the mode that it is in... so now it gives me a fraction answer and not decimal. Ex, I put in 52/48 it gives me 1 1/12 Do you know how to fix...


There is nothing to fix as what you describe is not a flaw, it is a feature. You calculator has a key marked CHANGE between (x,y) key and ) key. To change a result from fraction to decimal or from decimal to fraction, you press the CHANGE key.

Sep 05, 2011 | Sharp ELW535 Calculator

1 Answer

1 / 3.9 x 10 ^ -16


on the TI-30xa...
http://upload.wikimedia.org/wikipedia/commons/4/48/TI-30Xa_Solar.jpg
key 1
key blue division key
key (
key 3.9
key blue multiplication key
hit 2nd
hit 10^X key in yellow
key 16
key +/- grey key at bottom between . and =
key )
Finally, key =


are there any ( ) in your equasion?
if not... you can also solve individually...
Division first:
1/3.9 =
then hit 10^x key
enter 16, and press x/-
then enter.


Your answer should read 2.56410(repeating)e-17
which is .000000000000000025641056410564105641056410......etc.

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

May 22, 2009 | Texas Instruments TI-30XA Calculator

3 Answers

Hoe do you use logarithm on TI-36X SOLAR?


Basically you first have to put your answer into scientific notation by pressing the 3rd key then the 6 key. The screen display should change to one big zero and two small zeros.

I was workinggon the same problem with a -log of a chemistry problem to get pH and I knew the answer because I calculated it on it TI-85, but we are not allowed to use graphing calulators on the exam (:-((() so I had to figure out how to do it on this one!

For example, I had pH =-log(2.828947x10^4)

On the TI-36X you change to scientific notation using the instructions above. Once the three zeros enter on the screen:
[4]
[-]
[2nd]
[10^x]

1^-04 should appear on screen, then you multiply by 2.828947

[x]
[2][.][828947]
then your screen will show the answer in scientific notation.

2.828947 in big numbers and in small numbers -04
From there you simply press:
[log]
and your answer will show up as a negative number. Just take the absolute value of that and you have your answer. Took me like 30 minutes the night before a huge chemistry exam to figure that out! Hope it helps someone!

May 09, 2009 | Texas Instruments TI-36 X Solar Calculator

3 Answers

When putting in a simple problem like dividing 3/15, I get a fraction answer of 1/5. What am I doing wrong?


Or you can press the [S<->D] button (right above the DEL key) and it will switch between fractions and decimals. Or alternatively you can take it out of COMP mode and put it in STAT mode.

Mar 29, 2009 | Casio FX-115ES Scientific Calculator

1 Answer

Cannot find the constant key for multiplication


How to do constant multiplication or division on the Canon P170-DH calculator

This process actually requires fewer keystrokes than most other calculators. Basically, just do the first problem
and then do the next items with just the next number and the EQUAL key. For example,

*** Constant Multiplication ***
2 (multiply key)
10 (= key)
(The answer 20 shows on the screen. Note, the 2 is still stored as a constant without doing anything, just continue)
4 = (shows the answer 8 on the screen)
20 = (shows the answer 40 on the screen)
100 = (shows the answer 200 on the screen)

*** Constant Division ***
10 (divided by key)
2 =
(shows the answer 5 on the screen, the 2 is still stored as a constant without doing anything, just continue)
100 = (shows the answer 50 on the screen)
500 = (shows the answer 250 on the screen)
4 = (shows the answer 2 on the screen)

--------------
Also note! There is no K visible on the screen to indicate a constant is set.

Nov 17, 2008 | Canon P170-DH Calculator

1 Answer

The e to the x button


If you mean (e to the power x) minus 4, where x = -1, the key sequence would be:

1
+/- (above 3 key)
2nd
LN
-
4
=

Result is -3.63212.....

If you mean e to the power (x-4) where x = -1 again, it's:

10.0067379....
+/- (above 3 key)
-
4
=
2nd
LN

Answer


Jun 26, 2008 | Texas Instruments TI-30XA Calculator

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