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Calculators

A calculator is a hand-held inexpensive electronic device used to perform the operations of arithmetic. The simplest calculators can only do addition, subtraction, multiplication, and division, while scientific calculators can handle exponential operations, and trigonometric and logarithmic functions.

1,648 Questions

Who invented the slide rule?

The slide rule was invented during the period of 1620-1650 by William Oughtred, based on the earlier invention of the Gunter scale by Edmund Gunter. The original slide rule is said to have been circular, and come about 1620 or 1625. The straight slide rule is said to have been invented around 1650.

What is the full form of abacus calculating device?

The full form of ABACUS is Abudant Beads, Addition and calculation Utility System

How can you clear all data from a TI-84 plus silver edition?

Press second (2ND) and then memory (MEM, above +). Then select the seventh option, Reset.... In order to delete everything, use the arrow keys to select ALL on the top and then press enter to select All Memory....

What is the difference between a Texas Instruments TI 84 Plus Silver edition graphing calculator and a TI 86 calculator?

The two models have very different user interfaces. For most purposes, a TI-84 is easier to use and much more popular than the TI-86, and this may have been the reason the TI-86 was discontinued.

-how do you factor on the ti-84 calculator?

You cant factor on the ti-84. however the ti-89 does do this but its almost easier to just do it in your head. Plus on the ti-89 the way you enter it in there is a very high risk for error.

How do you calculate the maximum subarray of a list of numbers?

int maxSubArraySum(int a[], int size)

{

int max_so_far = 0, max_ending_here = 0;

int i;

for(i = 0; i < size; i++)

{

max_ending_here = max_ending_here + a[i];

if(max_ending_here < 0)

max_ending_here = 0;

/* Do not compare for all elements. Compare only

when max_ending_here > 0 */

else if (max_so_far < max_ending_here)

max_so_far = max_ending_here;

}

return max_so_far;

}

Time Complexity: O(n)

Algorithmic Paradigm: Dynamic Programming

How to you use algebra on a Texas instruments TI-30X IIS calculator?

you press the a button then you can steal the bagel* looks suspicous* but you didnt hear it from me

How do you use the getKey function on a TI-83 plus?

//A can be any variable and -> represents the sto(store) key function getkey->A //105 is the number of the corresponding key in this case the enter key
if A=105
then
*commands*
end

How do you graph a quadratic equation on the ti-84 plus?

Here is an example of how to graph 2x2+3x+5.

Press Y=. Then, next to Y1= type 2x2+3x+5. Use the x2 button to type the second 2 in 2x2. To type x, press the X,T,θ,n button or press ALHPA and then press X (above STO>).

  • If you do not see Y1= then press mode, select FUNC, and try again.

  • If you get an error, try pressing 2ND and then STAT PLOT (above Y=), select option 4, PlotsOff, and then press ENTER until the calculator says Done. Then try again.
  • If you cannot see the graph, then press ZOOM and select the sixth option, zoom standard and press ENTER. If you still cannot see the graph, press ZOOM and select option 0, ZoomFit (at the bottom) and press ENTER. If you still cannot see the graph, then clear what is next to Y1= and try again. If there are things next to Y2= and so on, you may want to clear them to make the graph easier to see.

What is a calculator that can find the function of a table without a common ratio?

In reality, there is no such calculator - nor can there ever be one. This is because there are infinitely many possible functions that will fit any finite table of numbers.

Why are calculators used in exams?

well it is used for calculating numbers and would be useful but usually calculators are not used during exams as it is a basic rule for not using them !

Why were calculators designed with the numbers bottom up while phones are top down?

The question should be the other way round. Calculators with the keypad in its current arrangement were widely used for decades before telephones changed from rotary dials to keypads. Perhaps this should be posted in a forum where people who know about telephones could weigh in on it.

How do you round numbers using a graphing calculator?

To 'round numbers' you need to go into mode and select what float you want i.e. if you want to round a number to 2 decimals select 'float 2'

How do you charge a ti-84 plus silver edition?

If it has rechargable batteries, open the back, take out the batteries and put them in a charger. When recharged, put back in the calculator.

If it doesn't have rechargable batteries, just buy more batteries.

Manual for canon palm printer P1-DH V?

Call 1-800-828-4040 Select technical support. You actually get a live English speaking person.
They can e-mail you the manual in .pdf format. It takes about 5 minutes.

I just got mine!

Is there an online calculator to calculate solids of revolution?

You will find online calculus calculators at the Related Links.

You accidetly deleated all your programs on your TI-84 calulator how do you get them back?

Once a program has been deleted on a TI-84, it is no longer in the calculator's memory. You would have to get the program from where you got it, or, if you programmed it, remake the program.

How can you put games on a ti-84 calculator?

You can use the cables that come with the calculator to get them from friends that already have them.

What is the fraction sign on TI-84 calculator?

The easiest way to input a fraction while calculating is to simply divide the top of the fraction by the bottom. So four fifths would be (4/5). To convert an answer into a fraction, such as .125, press the math button and select >Frac. .125>frac = (1/8)

How do I find the y values from a function that i inputed under stat edit on my ti-84 plus?

This answer assumes that the x-values are in list 1. If there are in another list, substitute that list's name for L1.

Type the formula for the y-value in on the home screen, but type L1 instead of x. For example, if the formula is y = 3x + 2, type 3*L1+ 2. The y-values will show up. Use the left and right arrow keys to scroll through them. If you want to compare the lists side by side, type Ans -> (the arrow is the STO> button) L2. Then press STAT and select Edit...

What is the definition of slide rules?

A slide rule is a simple mechanical analog calculator consisting of logarithmically graduated scales, one of which can be moved across the other so as to provide a method of multiplication or division by combining lengths on the scales.