Question about Texas Instruments TI-30 XIIS Calculator

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Poisson What keys do I need to use to multiply lambda of 20 with negative exponent on this calculator?

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Hello
To raise a number to any power you use the [^] caret key or on some calculators the [x^y] (x raised to exponent y)

20^(4) =160000

20 to the power of negative 3
20[^] 3 [(-) or +/-] ENTER gives 1.25x10^(-4) = 0.000125 (-) is the small minus sign.

If that gives you a syntax error
20[^] [(-) or +/-] 3[ENTER] = 0.000125

27 [^] (1/3] represents the cube root of 27 which is 3.
Hope it helps.

Posted on Sep 09, 2009

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What is most common power problem?


If by power, you mean exponents, there are several rules.

Multiplication with the same base - add the exponents
Division with the same base - subtract the exponents
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Im trying to do a poisson distribution on my ti030xa. i dont care if i have to do it in pieces. i just dont understand how to do the e which is 2.71828 to the -3 exponent times 3 to the fourth power.


You want to enter an exponential of some sort. There is a key for that function. Look for the natural logarithm function whose key is marked [LN]. The exponential function key is accessed through [2nd] or [Shift] followed by [LN].
If exponent is negative, use the change sign key (-) or +/- to enter the negative sign, followed by the exponent.
See the screen capture that follows.

25951332-q2pwurzke5pnc5434ywey2dm-4-0.jpg

Nov 10, 2015 | Calculators

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How are numbers in scientific notation entered in Aurora SC150X calculator


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How does one enter a number in scientific notation in SC150X calculator


Look for a key that is marked EE, or Exp, or x10^x. To enter a number in scientific notation, you enter the decimal part, then press the Enter Exponent key, followed by the exponent. If exponent is negative, you precede it with a press of the change sign key (-).
Once a number is entered there is no special treatment: multiply it divide, or add it.

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1 Answer

Just got a SHARP EL-531X, it won't do simple calculations with scientific notation, It keep saying


To enter the power of 10 with exponent use the Exp key followed by the exponent. If the exponent is negative, you must use the negation key (-) not the - key (for subtraction).
When you press the Exp key you do not type in the 10.

Mar 10, 2012 | Sharp Calculators

1 Answer

I am trying to multiply in scientific notation but I don't how to do it when the power of 10 is a negative i.e 1.67 time 10 to the 21st power multiplied by 9.11 times 10 to the -31 power. thank you


Make sure you use the +/- key just to the right of the decimal point key when entering negative values, including exponents.

1 . 6 7 EE 2 1 * 9 . 1 1 EE +/- 3 1 =

Aug 30, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

Try to multiply (20x10-9) (1x10-9)


If you use the exponent rules you do not need to use a
calculator for this particular case. Anyway to enter power of 10 exponents you use the [EE] key. See screen capture below.

20 [EE] (+ -)9 [X] 1[EE] (+ -) 9

14b85ae.jpg

Aug 12, 2010 | Texas Instruments TI-30XA Calculator

2 Answers

I don't know how to multiply by a negative exponent. ex: 10(-8) ....the -8 is the exponent.


Press [2nd][,] to activate (EE) which appears on screen as a lower case E, enter the change sign (-) right of the [dot] on the bottom row of keys, enter the value of the exponent.
Ex: Enter Avogadro's number of Generalk Chemistry fame
6.02[SHIFT][,] (EE) (-)23
Here is screen capture of what it will look like.

0da174e.jpg

Feb 23, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

Negative exponents? .825/(10^(-3)) ? Not sure how to get it to do the negative exponent.


You entered it correctly. Although you can leave out the parentheses if you want. The calculator will do exponents before it does multiplication or division just like it does multiplication and division before it does addition and subtraction. It has a built in order for hierarchy of operations. You only need to use parentheses if you want to do something that is different from this order. FYI, dividing by a negative exponent is the same as multiplying by a positive exponent. You could enter it in either way. .825/10^-3 = .825*10^3 = 825. I hope this helps you out.

Dec 02, 2009 | Texas Instruments TI-30XA Calculator

2 Answers

EE button ("enter exponent" button) Retuns Wrong Value


Hello,
I dont think you got a lemon.
You acn always enter the powers of 10 as 10, [y^x], but is is less efficient than the EE key
This EE representation is a shortcut.
If you want 10 to the 5th power you just enter [2nd] [EE] 5 and the calculator displays 100000. Of course if you need any other number multiplying the power of ten you enter the following e.g. 2.677[x][2nd][EE]5.

You will not get any error with a positive exponent. But if your exponent is negative you should use the change signe key to the left of ENTER and symbolized by (-)

To avoid all errors I would use parentheses to enclose my exponent.

Here is how to explain the seemingly erroneous result

10 [EE] 5 ) (-) is interpreted by your calculator as 10x(10^(-5)) which evaluates correctly to 0.0001 because [EE] by itself stands for 10^ .


Hope it clarifies this point for you.

By the way some new calculators (Casio) don't have this EE key. Instead you find a key labeled x10^X .

Hope it helps

Mar 12, 2009 | Texas Instruments TI-30XA Calculator

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