Question about Texas Instruments TI-30XA Calculator

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The e to the x button

I'm trying to put this equation in my TI-30Xa: e to the x power subtract 4 (and put -1 in for x).

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

+/- (above 3 key)

Result is -3.63212.....

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

+/- (above 3 key)


Posted on Jan 01, 2009


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1 Answer

How to add using scientific notation on a ti-30xs

Try pressing
2 [x10^n] 9 + 4 [x10^n] 3 =

[x10^n] is the button just below the [data] button (three buttons above the 8 button).

Jun 12, 2012 | Texas Instruments TI-30XA Calculator

1 Answer

How to push equation into calculator 2x/3+4=2x

Unfortunately, the TI-30Xa calculator does not handle algebraic expressions.
If you are interested in knowing more about the capabilities of the calculator, follow the link to download the guide book.

Mar 01, 2012 | Texas Instruments TI-30XA Calculator

1 Answer

Now that I know where the square root button is on my TI-30Xa, how do I calculate a "geometric mean" when the equation inclues a time period? For example the problem is setup like this: 6...

You don't want the square root. In this example, you want the sixth root.

Press 4 5 2nd [xth-root] 6 =

The xth-root is the shifted function of the y^x key, located just above the divide key.

Jun 11, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

I need the EXACT solution for -7 + square root of 61 divided by 2. I have a Ti-30XA calculator and I don't know how to do this.

It is unclear whether your equation is:

a: ((SQRT61) - 7) / 2
b: ((SQRT61) / 2) - 7

For a:
Type 61 SQRT.
Subtract 7.
Divide by 2.
Equals. (Should be 0.4051248...)

For b:
Type 61 then SQRT.
Then divide by 2.
Then subtract 7.
Equals. (Should be -3.094875...)

Good luck.

Apr 15, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

How do i put the equation x+4y=20 on my calculator?

You cannot. The TI-30XA is a simple calculator lacking any symbolic algebra or equation processing. However, if your task is "given a value for x, what is the value for y" for the equation you give, you can rearrange it a little:


Thus, if you want to determine the value of y for x = 16, key in 5 [-] 16 [÷] 4 [=] and get the result y = 1. To double check, substitute x and y in the original equation:
16 + 4 x 1 = 16 + 4 = 20.

Feb 12, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

How would you do negative exponents for scientific notation? example: (6.0 x 10^6)(2.0 x 10^4), I am required to use the EE button for my exponents since it's a scientific notation equation but I do not...

Use the (-) key for negative numbers (not just exponents) instead of the - key. The - is to subtract one value from another, (-) is to input a negative value.

Sep 09, 2010 | Texas Instruments TI-30XA Calculator

1 Answer

How do you make the calculator ti 30xa convert

I have a few questions and then I should be able to help you. In the equation you want to solve there is a letter g. Is this supposed to be there? Does this represent units such as grams? If this is the only units in this equation the answer will be mass not volume. Lets ignore the units and just punch in the numbers. Assuming the equation you want to solve is 3.70/2.50 x 10^-6. The buttons you need to push are 3.7/2.5 EE 6 [+/-] =. The EE button is the exponent button and the [+/-] button is the change sign button, located just below the 3. The change sign button changes the sign of the proceeding character, in this case it changes the 6 into a -6. This calculator will calculate the exponents before it does the multiplication or division so you don't need to use any parentheses for this equation. I hope this helps you out.

Jan 23, 2010 | Texas Instruments TI-30XA Calculator

1 Answer

Reposting! exponential and log equations

Use this entry sequence:

4 LN / ( 4 LN - 2 X 3 LN ) =

or this one which evaluates the divisor first

4 LN - 2 X 3 LN = 1/x X 4 LN

Dec 14, 2008 | Texas Instruments TI-30XA Calculator

1 Answer

Exponential and logarithmic equations

You re-asked this question more clearly and I answered it.....

Dec 14, 2008 | Texas Instruments TI-30XA Calculator

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