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I can't find how to input Int on my calculator

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Hi. Many of the fx 9750's functions are hidden; they are accessed via the 6 grey F keys under the display. To use Int, Frac, Abs functions, after you turn on your calculator, in normal mode (menu 1 selection), press [OPTN] [F6] [ F4]

This will give you the number menu, containing Abs, Int, Frac, Rnd and Intg
Int is the F2 key. Press [F2] first, then enter number or variable. Int value will be shown.

Hope this helps.

Posted on May 04, 2009

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I know there is a 360 and 365 day year in the HP. How do you change it from one to the other?

Here is how to do it during a calculation. It is taken from the manual
Press [f] [INT] to calculate on the basis of 360 days per year.
Press [R arrow down][X><Y]to calculate with 365 days per yea.r

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My TI-89 does not calculate integrals, etc. for example Int(x) will result in Int(x)

Don't spell it out. Use the integral sign, available by pressing 2nd then 7.

For this example, press 2nd 7 2nd Y X ) , ) ENTER

2nd 7 gets you the integral, 2nd Y gets you the sine.

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How do you graph a greatest integer problem

To graph a greatest integer function, follow these steps:
1.) Press Y= 2.) Press MATH, then scroll to the right one column and select "int(" 3.) Enter your function inside of the parentheses, and make sure to put a closing parentheses at the end of the function you are inputting. 4.) After you have closed the parentheses to the "int(" command, add 1 to the end of the equation. This is because the "int(" command tells the calculator to take the lowest integer of the value inside of it. If you add one, then instead of .68 becoming 0, it becomes 1, and 1.724 becomes 2, etc.

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How to calculate a finite integral

Press 2ND MATH to bring up the Math menu. Select "Calculus" and then "integrate." Enter the expression, the variable of integration, the lower limit, and the upper limit, separated by commas. Close the final paren and press ENTER or diamond ENTER.

For example, to calculate the integral from 0 to pi of sin(x) dx, you want


where INT is the integral sign and pi is the lower-case Greek pi.

Sep 22, 2010 | Texas Instruments TI-89 Calculator

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How do I program the calculator to read random numbers 1-50?

The post answer the question concerning how to generate random integers. The example given is for rolling a dice. I am inserting the modification that treats your case at the end.

The random number generator function is called Ran# and can be accessed in RUN mode by pressing:
[OPTN] [F6] [F3] (PROB) [F4] to access the (Ran#) function
In the paragraph above, the bold text in square brackets indicates keypresses, while the text in parentheses represents the menus that appear at the bottom of the calculator screen. This also assumes there are no menus on the bottom of the screen when you begin. If PROB is already on the screen, then the [F6] key is not necessary, just press [F3] then [F4] at this point.

The Ran# function generates a random decimal number between 0 and 1. If you need to generate a number with a higher range, then there may be extra steps involved. For example, to choose a random number between 0 and 100, you would enter:
Ran#×100 or Ran#(100)

Let's say you want to simulate a dice roll, where you get an integer between 1 and 6. Your first step would be to do:
This will give you a random decimal number between 0 and 6. But we need an integer, not a decimal. To make it an integer, you would change this to:

Press [OPTN] [F6] [F4] (NUM) [F2] to access the (Int)

This now gives you an integer between 0 and 5. We just need to add 1 to the result.
The result should be an integer between 1 and 6.

To generate random number between 1 and 50

Jul 16, 2010 | Casio FX-115ES Scientific Calculator

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There is no such button, but there is a command accsssible as follows
[MATH] right arrow to highlight [NUM] and 5:int( [ENTER] In short
The command appears on home screen, where you give it the decimal number whose inter part you want.
Ex; int(15.87) gives 15

You shoul explore the catalog of all commands avaible on your calculator. You press [2nd][CATALOG] (under the digit 0) and scroll down or up. If you know the command, while in [catalog] press [ALPHA] and enter the first letter of the command. The cursor moves to the first occurrence of the letter and you can then scroll more to reach the command.

Hope it helps

Jun 04, 2009 | Texas Instruments TI-84 Plus Calculator

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Casio fx-9750GA can't find Ran or Int


Turn calculator on. Select [RUN] [EXE].
In run screen press [OPTN] [F6:-->] [F4:NUM] then select the function you want to use. You have ABS, Int, Frac, Rnd, Intg.

Hope it helps.

Feb 15, 2009 | Casio CFX-9850G Plus Calculator

1 Answer

How do I get the Ti 85 to do random integers?

Functions on the calculator are bold. Numbers you choose are in italics.

For random positive integers between 0 and n use the following:

int (rand * n) + 1

int is on [Math] [Num] F4

and rand is on [Math] [Prob] F4

rand returns a random number x between 0 and 1 such that 0 < x < 1.

int returns the integer portion of a number such that int 123.456 returns 123 and int -123.456 returns -124.

Jan 19, 2009 | Texas Instruments TI-85 Calculator

1 Answer

The Greatest Integer Function (int)

The greatest integer function (also called a step function) is actually a piecewise defined function with a special definition. The function has the notation f(x)=||x|| or f(x)=[[x]] when it is written, but the TI-83 and the TI-84 designate this function by using f(x)=int(x) and is found in the MATH NUM menu. This function is the greatest integer less than or equal to x. So, f(1)=1 and f(1.4)=1. Since this is a piece-wise function you should use DOT mode.

Mar 21, 2008 | Texas Instruments TI-84 Plus Calculator

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