Question about Texas Instruments TI-84 Plus Calculator

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When I type in (0.02) to the power of 2, it displays E. I want decimals

When I type in (0.02) squared, on TI-84 Plus, I get an answer 4E to the power of -4. On my TI36X, I get an answer of 0.0004. Why can't I get my TI-84 to display the same wasy as TI36? I checked all the Mode settings and they seem to be fine. Please help

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If number format in MODE is set to Normal, and if the (absolute value of) the number is smaller than 0.001,the calculator displays it in scientific notation( with the E). By the way E( ) stands for x10^( ).

Posted on Sep 06, 2009

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If i Type Square root of 148, i get some wierd decimal, i dont want that. I want a radical like 3 radical 12 i think thats the answer, how do i get it to display that insted everytime for when i type in...

The square root of 148 is 2*sqrt(37), the square of 3*sqrt(12) is 108, but that's not the point.

The TI-84 can't produce results like 2*sqrt(37). It can produce results as fractions but not involving roots. Some other machines, like the TI-89 can, but not the 84.

Sorry if that wasn't the answer you were hoping for.

Nov 07, 2013 | Texas Instruments TI-84 Plus Silver...

1 Answer

My TI-84 Plus Silver Edition is giving regular math problems (.064/160000) an answer involving an E (4E-7) and I'm not sure how to change it.

The E is an engineering notation for 'x10^' so the answer there 4E-7 = 4 x 10^ -7 (I'm using the x as multiplication). I'm afraid there isn't a way of changing it (that I know of) but it is not difficult to learn, it's just a simple way of writing scientific notation!

Sep 01, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

How do you do you put square roots into its simplest radical form? Because I can do small numbers mentally but when they are bigger I get stuck..


I really don't like to tell this to you but the Ti-84 plus will not display a square root as an answer, it will always return answers in decimal form. The best way for you to simplify roots is by using a factor tree and knowing your squares up to 30. I went through all of that using a ti-83 plus so I completely understand your desire for it to show a root, it just won't. I really wish you the best with this problem, but having read the owners manual for it, I just don't see any other way to do it.

Mar 21, 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

How do a take a division problem and square root it on a TI-84 Plus Silver Edition for example 87.34/5 then square root the answer. I can do the math, but how do I take the dvision answer and square...

Two ways:

2ND [square-root] ( 8 7 . 3 4 / 5 ) ENTER

8 7 . 3 4 / 5 ENTER then 2ND [square-root] 2ND ANS ENTER

The first sequence takes the square root of 87.34/5, the second sequence calculates 87.34/5 then takes the square root of the result.

Dec 15, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

My Ti-84 plus gives me an answer of "4E-4" when I multiply .02 times itself. How can I get it to show me the decimal answer instead of the E

Unfortunately, you can't. From the manual:

If [...] the answer cannot display in 10 digits (or the absolute value is less than 0.001), the TI-84Plus expresses the answer in scientifc notation.

Oct 05, 2010 | Texas Instruments TI-84 Plus Calculator

2 Answers

Im pressing in 2e^(2) and i get the answer 14.7781122 when it is suppose to be 4? What is wrong with my TI-84 Silver Edition?

Nothing is wrong w/ the calculator, e is the base for natural logarithms, therefore, you are getting the correct solution for the problem you typed. to get four, simply type 2 then the "squared" button (the button w/ a small 2 on it) and voila!

Sep 27, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

I ask my TI-83 Plus to calculate (-64)^(3/2) The TI-83 Plus says the answer is -512i, but I think the answer should be 512i. Is the calculator wrong or am I?

You're both right, in a way. (-64)^3 is -262144. The square root of that is +/- 512i. Take your choice as to the sign.

For what it's worth, the TI-84, TI-86, TI-89, and the HP 50g all go with the negative value.

Jan 24, 2010 | Texas Instruments TI-83 Plus Calculator

3 Answers

Comma key on TI-84 Plus Siver Edition calculator.

The comma key on the TI 84 SE is above the 7 key, and it is just left of (, right of x squared, and below SIN. thats where the "," key is. If you're asking something else, please clearify. My understanding is that you don't know where the comma key is. 

Mar 16, 2009 | Texas Instruments TI-84 Plus Silver...

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