Question about Texas Instruments TI-30XA Calculator

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I cant figure out how to get the square root of a negative number

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The square root of a negative number is an imaginary number, and the TI-30XA does not deal with imaginary numbers.

However, the square root of -x is equal to i times the square root of x. So, to calculate the square root of -4, for example, press 4 square_root = and read 2. Thus the square root of -4 is 2i.

Posted on Oct 07, 2010

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Ti-36x pro


In the top right corner of the screen. There is a button that says 2nd.

Press 2nd then press the button that is four buttons further down on the same row of buttons.

Nov 24, 2013 | Texas Instruments TI-36 X Solar Calculator

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I have a T1 30xs, and I am trying to figure square roots. It picks and chooses which square root it will give me. For example. it will give me the square for 729 and 64, but all it will do for, say, square...


The calculator is able to display fractions and certain irrational number as radicals. However there is the twosided arrow key to
toggle between exact and approximate (decimal).

Here is a screen capture from the manual to give you some more informations. k24674_127.jpg

Jul 08, 2011 | Texas Instruments TI-30X-IISTK Scientific...

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Can I use the HP 12c to figure out square roots of numbers


Absolutely. The square-root function is the blue g-shifted function of the y^x key, 2nd row, leftmost column.

As an example, to calculate the square root of 5, press 5 g [square-root].

Jun 06, 2011 | HP 12c Calculator

1 Answer

The square root of -(49/64)


The square root of a negative number does not exist in lR, the set of real numbers.
In the set of Complex numbers the square root of -49/64 is (7/8)i, where i is the imaginary unit defined by i^2=-1.

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

1 Answer

How do I find the square root of a number? and how do I enter scientific equations?


For square roots, use the square root key just to the left of the divide key. For example, 4 square-root = will give you 2.

The calculator doesn't have any way to store equations, scientific or otherwise. If you mean scientific notation, use the EE key just above the 7 key to enter exponents. For example, to enter 1.23x10^6, press 1 . 2 3 EE 6. For negative exponents, make sure to use the +- key to the right of the decimal point instead of the - key.

Sep 22, 2010 | Texas Instruments TI-30XA Calculator

1 Answer

Want to know how to calculate a number raised to a power


Use the general power key marked with X to the y ( look for the image of a key on same line as Power in the screen capture)
You enter a number then press the power key and finally the exponent. If exponent is complicated (fraction, negative or other) enclose the exponent in parentheses.

4c0b812.jpg

You aslo have dedicated keys for certain powers and roots (square, square rooot, cube, cubic root)

Jun 09, 2010 | Casio FX-260 Calculator

1 Answer

How to use the exponent key on a casio fx 300ES calculator ?


The key to use for the square, and the cube are well marked and they share the same physical key (X to 2) or [SHIFT][X to 2]. Similarly the keys to use for the square root and the cube root share the same physical location (the square root key, to the right of the square key).

For any other exponent, including fractions and negative exponents you use the universal power key labeled [X to ] ( X with a raised square).
  1. You enter the base (the number to be raised to a power).
  2. You press the [X to ] power key.
  3. You close the parenthesis (the right one).
  4. You press [=]
Sometimes the result may not be displayed as a decimal number, but as a radical (if you take a root). To make sure it is displayed as a decimal number, in step 4 above, press [SHIFT][=]

Mar 13, 2010 | Casio FX-300W Plus Calculator

2 Answers

How do I do square roots?


if there is a square root symbol on one button than use that.
punch in your numeber en then that button to derive result.

On a Casio you have to invoke the function call first because they have shared buttons.

May 07, 2009 | Texas Instruments TI-30XA Calculator

2 Answers

How do you use the imaginary number with the TI-84 calculator?


If you want the answer in rectangular form, set MODE a+bi and tap ENTER and QUIT. Tap square root sign, tap (-)4 and close the parenthesis and tap ENTER. The answer is shown as 2i.
If you want the answer in polar form, set MODE to re^xi and and DEGREE. Tap ENTER and QUIT. Tap the square root sign, tap (-)4, close the parenthesis, and tap ENTER. The answer shown is 2e^90i. (2 at ninety degrees). If you selected RADIAN mode, the answer would be 2e^1.57i (2 at 1.57 radians; or 2 at pi/2 radians)

Mar 09, 2009 | Texas Instruments TI-86 Calculator

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