Question about Texas Instruments TI-30XA Calculator

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How does this key work ?

When i try to use this key, it always answer 1.02532098 ( a number like that)

can anyone explain me how to use this key ?

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The "y to the power x" key returns the result of things like "2 to the power 5".

So the key sequence 2, y to the x, 5, gives you 32 (2x2x2x2x2).

The key you highlight is does the reverse, it returns the xth root of the number y.

So the sequence 32, 2nd, y to the x, 5 gives you back 2


Posted on Dec 31, 2008

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How do I use log


hi

to explain what a logarithm is, it's to involved to explain here but check sosmath.com for a detailed explaination of it

i use it to find root and powers of numbers. it turn up in certain natural process like radioactive decay, population growth, interest calculations..etc

for square rooting a number

square root of 16
type 16 press the log ( I'm using a scientific calculator a TI 30s to be exact) key to get 1.204119983 for a result divide by 2 to get .602059991 press shift or 2nd log key ( to get the 10^ key - this the anti- log key) to get 4 as a result

I hope this helps

May 25, 2014 | Texas Instruments TI 30XIIS Scientific...

1 Answer

I have a possible glitch. If I use the negative (+/-) key BEFORE hitting enter, the number is made negative as it should be. But for whatever reason, AFTER I hit enter, it displays only -0. If I hit...


I doubt that it has a glitch. Although possible, it is not very probable. Try to use the calculator correctly.
Follow the algebraic logic.
If you did not input any value the answer memory contains the value 0.
When you press (+/-) followed by [=] it takes the value in answer memory and negates it, thus giving you (-0).
Adopt a consistent way of inputting numbers, namely always enter the negation sign before the number that is negated. The calculator will enclose the negated number between parentheses, which prevents may errors. Too bad this feature has not been kept in more recent calculators by Sharp.

Dec 04, 2013 | Calculators

1 Answer

I have a possible glitch. If I use the negative (+/-) key BEFORE hitting enter, the number is made negative as it should be. But for whatever reason, AFTER I hit enter, it displays only -0. If I hit...


I doubt that it has a glitch. Although possible, it is not very probable. Try to use the calculator correctly.
Follow the algebraic logic.
If you did not input any value the answer memory contains the value 0.
When you press (+/-) followed by [=] it takes the value in answer memory and negates it, thus giving you (-0).
Adopt a consistent way of inputting numbers, namely always enter the negation sign before the number that is negated. The calculator will enclose the negated number between parentheses, which prevents may errors. Too bad this feature has not been kept in more recent calculators by Sharp.

Dec 04, 2013 | Calculators

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

1 Answer

I need the answer to this 5^-3 it equals 1/125 which key do I press now to convert the answer? Thank you


Press the"SHIFT" button in the top left corner, then the "MODE" button on the top right.
Select 2: Line10

This will always give you a decimal answer. When you want to switch back to fraction, just select number 1:Mth10

Jun 28, 2011 | Casio FX-115ES Scientific Calculator

1 Answer

Casio fx 992s when i try to do simple calculations like 1.33360 - 1.33041.....the answer is 3.19 and other little numbers in the top right. i dont get this or like this. i want a proper 5 decimal...


It sounds like you need a manual for your calculator. You can download a scanned copy here, and it will explain what all the keys are for. For now, here is the way to set the calculator for a five decimal place display:
  1. Press the MODE key three times. A menu offering choices of FIX, SCI or NORM will appear.
  2. Press the 1 key to select FIX mode. The message "0~9?" will appear.
  3. Press the 5 key. This tells the calculator to display five digits after the decimal.
This mode setting will hold until you change it to something else, or when you turn off the calculator.

Spend some time reading the manual and work with the calculator. It's a powerful tool with a lot of capabilities. Thanks for using Fixya!

Oct 08, 2010 | Calculators

1 Answer

Need to know how to power a number???


You can use the universal power key. On the screen capture it appears below the hyp key (second row, the one before last)debc9eb.jpg

To enter 1000 to -.415
1000 [y to x] [(] [+/-] .415 [)]

where [+/-] is the change sign key.

Jun 03, 2010 | Sharp EL-531VB Calculator

1 Answer

I cannot find how to change my answer display to a decimal instead of a fraction on a Casio FX-115ES. I am working with financial formulas and need decimals! Anyone???


If the result is already calculated and displayed, press the [S<=>D] key It will convert a fraction or radical to decimal. This is always possible. If the result is decimal it may be converted to a fraction or a radical (Not always possible).

If the expression to be evaluated is still in the command line and you have not pressed the [=] key, you can force the result to be displayed in decimal format by pressing [SHIFT][=] instead of just [=].

More permanently. If you do n o care for fractions and radicals, set the Input/Outpout mode to LineIO. To do do press [SHIFT][MODE] to access the (SETUP) screen and select [2:LineIO]

May 20, 2010 | Casio FX-115ES Scientific Calculator

3 Answers

How to get the square root using a ti-30xa calculator?


Come on now....there are dedicated "square" and "square root" keys on the TI-30XA....

Enter your number e.g. 4, then press the "root x" key to get 2...

Press "x squared" key to get the square of 2 = 4

There's the even more useful "y to the power x" key and it's inverse "xth root of y" key.

E.g. Enter 2, then press the "y to the power x" key, then 5, then =, answer is 32 (2 x 2 x 2 x 2 x 2). Starting with 32, pres 2nd then the "y to the power x" key, then 5, then =, answer is 2, the 5th root of 32....

Dec 01, 2008 | Texas Instruments TI-30XA Calculator

1 Answer

How does that key work?


I naswered a duplicate of this question today.....

Sep 10, 2008 | Texas Instruments TI-30XA Calculator

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