Question about Texas Instruments TI-30XA Calculator

# Decimals in the exponents for TI-30Xa

How do we do decimals in the exponents for TI-30Xa

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### k24674

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• Texas Instru... Master

Hi,
You have a key labeled [Y to the x], use it for all the powers or roots that do not have a dedicated key or key sequence. Let the key be [^]

Ex: 13.675 to the power 1.33 is entered as 13.675 [^] (1.33) [=].
The result is 32.41778634
Ex: (-64)[^](2/3) [=] gives 16 as result. The (-) is the change sign key
Ex: (2.87655)^(-6.778) is entered as 2.87655 [^] ( (-) 6.778 ) [=] 0.0007758
The (-) is the change sign (or the negative of), not the regular minus. When you have a negative exponent or a complicated exponent, it is safer to enclose the whole exponent inside parentheses.

Hope it helps.
Thank you for using FixYa

Posted on Nov 22, 2009

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### How do i enter a decimal exponent in TI-30XA calculator. for example 10^-8.85

Use the 10^x function in the top row of the keyboard.
Press 2nd [10^x] +/- 8 . 8 5 =
The +/- key is just to the right of the decimal point key.
If you're entering integer exponents, you can use the EE key just above the 7 key. For example, to enter 10^8, you can press 1 EE 8

### I need help on typing in exponents like (6.02*10^23) (8.65*10^4)

6 . 0 2 EE 2 3 * 8 . 6 5 EE 4 =

The EE (enter exponent) key is located just above the 7 key. If you want a negative exponent, make sure you use the +/- key located just to the right of the decimal point key instead of the - key.

### I don't know how to type in negative exponents on my TI 30XIIS

The same way you type in a negative number. Make sure you use the (-) key just to the right of the decimal point key to enter a negative sign, not the - key you use for subtraction.

### How can i enter a decimal exponent in ti -30xa

Use the EE key located just above the 7 key. For example, to enter 1.2 times ten to the 4th power, press 1 . 2 EE 4

Make sure you use the +()- key located to the right of the decimal point key to enter negative values.

### How can I enter into my calculator exponents like (1.09 x 10-6)

Use the EE key just above the 7 key to enter exponents. Use the +/- key to the right of the decimal point to enter negative values. For 1.09 x 10-6, press
1 . 0 9 EE +/- 6

### How do i do negative powers of 10 on a texas ti-30x?

Use the EE key, just as for positive exponents. Just make sure you use the +- key (next to the decimal point key) to enter negative values, not the - key which is for subtraction.

### How would I calculate -log(6.2 x 10^-8) on my TI- 30XA

6 . 2 EE +- 8 LOG +- =

EE is the Enter Exponent key, just above the 7 key. +- is the Change Sign key, to the right of the decimal point key.

### How do I use a negative exponent when working working with natural exponential functions, on this calculator?

The same way you'd work with positive exponents. The only difference is that a negative exponent has a negative sign, entered with the (-) key just to the right of the decimal point.

The (-) is used to enter negative numbers, not just exponents. The - key is used to subract one value from another.

### How do I enter values in scientific notation

Use the EE (Enter Exponent) key just above the "7" key. For example, to enter 3.1x10^4, press 3 . 1 E 4.

For negative exponents, make sure to use the +<>- key just to the right of the decimal point instead of the - key.

### I bought a TI-30XA months ago. I liked it so much

Hello,
I do not know what to say. Since you seem to have a problem seeing the decimal mark, it may reduce the guessing if you use the scientific display format, which is always one digit, decimal mark, additional decimal digits, exponent. With this format the decimal mark is always at the second position (if there is no - sign) and at the third (if ther is a - sign). But if you are reluctant to use it there is no solution.

Hope it helps.

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