Question about Texas Instruments TI-84 Plus Calculator

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I can't enter a negative number

The TI 84 gives the reading "ans -5" when type in -5 it screws up any futher calculation How do I get it off this mode. I have erased the RAM and reset the defaults

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Push the button right hand button it looks like this (-) for neg. #

Posted on Jan 24, 2009

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Push the right button, I aways used RPN calculators in the past.

Posted on Jan 14, 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

I have a TI-84. It gives me a syntax error when I try to enter problems with negative exponents.


Use the (-) key (just to the right of the decimal point key) instead of the - key when entering a negative number (not just exponents).
- is used to subtract one value from another. (-) is used to negate a value. - operates on two numbers, (-) operates on one.

Mar 14, 2012 | Texas Instruments TI-84 Plus Calculator

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HOW CAN I GET AN EXPONENT FROM TI-84 EX: B


You cannot use a letter as an exponent, unless you stored a numerical value in memory B (EX: 3 [STO>] [ALPHA] B stores value 3 in B)
For any numerical value of exponent ( positive, negative, integer, fraction, what have you) you use the general power key, marked with a caret [^] under the [CLEAR] key.

Example: To enter 15 to power 5
Type in 15
Press [^] key
Type in the value of the exponent (5) and press [ENTER]
You get 759375 as result.

Feb 18, 2011 | Texas Instruments TI-84 Plus Calculator

2 Answers

I when i power -3 to the second i get -9 when it should be just 9


No, is giving you the correct result. When you negate 3-squared, you should get -9. If you want to square negative three, you need to type it in as ( (-) 3 ) ^ 2 or ( (-) 3 ) x^2

There is a difference between (-3)^2 and -(3^2). If you omit the parentheses, the calculator will interpret it as the latter.

If in doubt, use parentheses.

Feb 17, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

TI-84 Plus Silver Edition. When dividing negative powers of ten by other negative powers of 10 the calculator it just adds the the negative powers together. How do i fix this? An example: 5*10^-10 /...


To enter an exponent, positive or negative, use the EE (Enter Exponent) key (the shifted function of the , key just above the 7 key). Do 5 2ND [EE] (-) 1 0 / 5 2ND [EE] (-) 1 0 ENTER and you'll see 1.

What I think you're doing (I can't be sure without seeing your keystrokes) is calculating
5*10^-10/5*10^-10 which is interpreted as (5*10^-10/5)*10^-10, which indeed is 10^-20.

Oct 16, 2010 | Texas Instruments TI-84 Plus Silver...

1 Answer

Whenever I type in a negative number raised to an exponent, the calculator outputs a negative number! even for a question like -2^2. How do I fix this?


You're not raising a negative number to an exponent, you're negating a number raised to an exponent.

If you want to raise -2 to the second power, you need to enter it as
( (-) 2 ) ^ 2

Without the parens, what you're getting is the equivalent of -(2^x)

Sep 19, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

TI-84 calculator root problem


Press 4 then press math. Select #5. You'll be back at the home screen now type 90 and press enter. You can use this for any root.

Aug 04, 2009 | Texas Instruments TI-84 Plus Silver...

1 Answer

TI 84 Windows range problem


I think you are using the minus symbol instead of the negative symbol (located below the 3).

Jul 01, 2009 | Texas Instruments TI-84 Plus Silver...

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