Question about HP 12c Calculator

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Posted on Jan 02, 2017

HP lists on their site (and in user manual) a way to run a key test to see which keys are bad. I'd start there.Type "hp 12c key test" into your search window on your browser and the first thing that comes up should answer it. Took me about 4 seconds to find this.

Sep 06, 2014 | HP Calculators Hp12c Finance Calculator

Use the square root function. It's the g-shifted function of the 1/x key (second key from the left on the second row).

May 14, 2014 | HP 12c Calculator

Use the square-root function. It's the g-shifted function of the y^x key, leftmost on the second row. For example, to calculate the square root of two, press 2 g square-root

Sep 21, 2013 | HP 12c Calculator

Press 1 . 2 1 2 4 ENTER 4 1/x y^x

Aug 26, 2013 | HP 12c Calculator

No, you're not squaring a negative number, you're negating a square. When you press (-) 4 ^ 2 ENTER , the calculator is calculating -(4^2). 4^2 is 16, and the negative of that is -16. What you want to do is to calculate (-4)^2 by pressing ( (-) 4 ) ^ 2 ENTER .

Jul 11, 2011 | Texas Instruments TI-83 Plus Calculator

Below is calculation of window glass area :

4.167 ft '------------------------------------'- ' ' ' ' 2.833 ft ' ' '------------------------------------'--

Total area = 4.167 ft x 2.833 ft = 11.81 ft2

4.167 ft '------------------------------------'- ' ' ' ' 2.833 ft ' ' '------------------------------------'--

Total area = 4.167 ft x 2.833 ft = 11.81 ft2

Dec 04, 2010 | CRL Fixed "All Glass Look" Window for Side...

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.

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.

Oct 07, 2010 | Texas Instruments TI-30XA Calculator

The missing number is 61.

Look at perfect squares: (1,4,9),16, 25, 36, 49,64, 81,100,121

Then look at the given progression 15, 26, 34, 51, x, 84, 96,125

Take differences from the closest -1,+1, -2, +2, -3, +3, -4, +4

(15 is 1 less than 16 = 4 squared,

26 is 1 more than 25 = 5 squared,

34 is 2 less than 36 = 6 squared,

51 is 2 more than 49 = 7 squared,

**61** is 3 less than 64 = 8 squared,

84 is 3 more than 81 = 9 squared,

96 is 4 less than 100 = 10 squared,

125 is 4 more than 121 = 11 squared)

Look at perfect squares: (1,4,9),16, 25, 36, 49,64, 81,100,121

Then look at the given progression 15, 26, 34, 51, x, 84, 96,125

Take differences from the closest -1,+1, -2, +2, -3, +3, -4, +4

(15 is 1 less than 16 = 4 squared,

26 is 1 more than 25 = 5 squared,

34 is 2 less than 36 = 6 squared,

51 is 2 more than 49 = 7 squared,

84 is 3 more than 81 = 9 squared,

96 is 4 less than 100 = 10 squared,

125 is 4 more than 121 = 11 squared)

Jun 20, 2010 | Texas Instruments World of Mathematics...

Turn the calculator off. Hold down the period (decimal) key and hit the "ON" button at the same time.

Mar 03, 2010 | HP 12c Calculator

Use the toggle button above the enter key. It looks like 2 arrows

Feb 18, 2010 | Texas Instruments TI-30XA Calculator

Feb 26, 2015 | HP 12c Calculator

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