Q: How to calculate a power on the CASIO GRAPH 75?

To calculate a power of 2 (or any power) on the CASIO GRAPH 75 , use the caret (^) in RUN•MAT mode. Syntax Type: base^exponent Practical examples 2 squared (2²): type 2^2 then press EXE → Result: 4 2 to the power of 10: type 2^10 then EXE → Result: 1024 With parentheses for clarity: (2)^5 → 32 The symbol ^ is directly accessible on the keyboard. Press EXE (or ENTER) to execute the calculation.

Question 1

Is there a percentage key on the CASIO GRAPH 25 PRO calculator?

Accepted Answer

The CASIO GRAPH 25 PRO calculator does not have a dedicated percentage (%) key on its main keyboard. You need to use basic arithmetic operators to perform your percentage calculations.

To calculate a simple percentage: divide the number by 100 and then multiply by the desired percentage. For example, to calculate 20% of 150, enter 150 × 20 ÷ 100 (result: 30). You can also use the reverse order 20 ÷ 100 × 150 for the same result.

To calculate what percentage a number represents: divide that number by the total and multiply by 100. For example, if you want to know what percentage 45 represents of 200, enter 45 ÷ 200 × 100 (result: 22.5%).

% function for lists: The calculator has a specialized function accessible via [OPTN]-[LIST]-[%] that automatically calculates the percentage of each data point in a list relative to the total. This function is useful if you are working with data organized in lists.

If you frequently perform percentage calculations, you can create a program in PRGM mode to automate these operations, but manual entry of formulas remains simple and quick for one-off calculations.

Question 2

How to calculate a power on the CASIO GRAPH 75?

Accepted Answer

To calculate a power of 2 (or any power) on the CASIO GRAPH 75, use the caret (^) in RUN•MAT mode.

Syntax

Type: base^exponent

Practical examples

2 squared (2²): type 2^2 then press EXE → Result: 4
2 to the power of 10: type 2^10 then EXE → Result: 1024
With parentheses for clarity: (2)^5 → 32

The symbol ^ is directly accessible on the keyboard. Press EXE (or ENTER) to execute the calculation.

Question 3

How to calculate the quotient and remainder of a division on the CASIO GRAPH 25+

Accepted Answer

The CASIO GRAPH 25+ has two specialized functions to calculate the quotient and remainder of an integer division (Euclidean division):

Int÷ function (integer quotient): Press OPTN, then CALC, and select Int÷. Enter your calculation in the form 107 Int÷ 7 and then press EXE. The result displays 15 (the quotient).
Rmdr function (remainder): Press OPTN, then CALC, and select Rmdr. Enter your calculation in the form 107 Rmdr 7 and then press EXE. The result displays 2 (the remainder).

These two functions are used to determine the quotient and remainder when dividing one integer by another integer. In the example above, 107 divided by 7 gives a quotient of 15 and a remainder of 2, because 15 × 7 + 2 = 107.

If you prefer to use a manual method, you can also calculate:

Quotient: Int(107/7) using the integer part function (available in the same OPTN > CALC menu)
Remainder: 107 - 7 × Int(107/7) = 2

Question 4

How to calculate the binomial cumulative distribution function (Binomial CDF) with the CASIO GRAPH 35+E II calculator?

Accepted Answer

To calculate the binomial cumulative distribution function (Binomial CDF) on your CASIO GRAPH 35+E II calculator, follow these steps:

Press the MENU key to access the main menu.
Select the STAT (Statistics) mode using the directional arrows and pressing EXE.
In the STAT menu, select the DIST (Distribution) option which contains advanced statistical functions.
Select BINM (Binomial) to access the binomial distribution functions.
Choose Bcd, which corresponds to the cumulative binomial distribution function (Binomial CDF) - this function calculates the cumulative probability.

Once in the Bcd function, you need to enter three parameters in this exact order, separated by commas:

x: the maximum value up to which you want to calculate the probability (maximum number of successes).
N: the total number of trials or attempts (sample size).
p: the probability of success for each trial, expressed as a decimal between 0 and 1.

The Bcd function calculates the cumulative probability that the number of successes is less than or equal to x. For example, if you enter the parameters 5, 10, 0.6, the calculator will display the probability of getting at most 5 successes in 10 trials with a 60 percent probability of success for each trial. Press = to get the result.

Practical example: You flip a biased coin 20 times and want to know the probability of getting at most 8 heads. Go to MENU > STAT > DIST > BINM > Bcd, then enter 8, 20, 0.5 and press =. The result will be the corresponding cumulative probability.

Important note: Do not confuse Bcd (cumulative distribution function) with Bpd (probability mass function). The Bcd function gives the probability of getting at most x successes, while Bpd gives the probability of getting exactly x successes.

Question 5

How to switch to radian mode on the CASIO GRAPH 35+ PROGRAM calculator?

Accepted Answer

To set your CASIO GRAPH 35+ PROGRAM calculator to radian mode, follow these simple steps:

Turn on the calculator by pressing the ON key.
Press the MODE key to access the settings menu.
In the menu, look for the option related to angle units. This option may be displayed as Deg (degrees) or Rad (radians).
Use the arrow keys to select Rad (radians).
Confirm your choice by pressing the EXE or ENTER key.

Your calculator is now set up to perform trigonometric calculations in radians. You can verify this setting by calculating a known trigonometric function and comparing the expected result in radians.

Question 6

How to perform prime factorization with the CASIO GRAPH 25 PRO calculator?

Accepted Answer

The CASIO GRAPH 25 PRO has a prime factorization program in its program library. This program continuously divides a natural number by successive factors (2, 3, 5, 7, etc.) until all prime factors are obtained.

How the program works:

The program accepts a natural number A as input.
It divides A by factors B successively (2, 3, 5, 7…).
If the division has no remainder, the result replaces A and the division continues with the same factor.
The process repeats the operation until B is greater than A.
The found factors are displayed until the number is completely factored.

How to use this program:

Access the PROG mode (Program) from the main menu.
Select the "Prime Factorization" program from the available library or copy it if necessary.
Run the program by pressing EXE.
Enter the natural number you wish to factor.
The program will display all the prime factors of the entered number.

Example: For the number 462, the program will display the factorization: 2 × 3 × 7 × 11. This result confirms that 462 is the product of these four prime numbers.

This program is particularly useful for analyzing numbers, simplifying fractions, or studying the properties of prime numbers in mathematics.

Question 7

How to plot a graph with the CASIO GRAPH 35+E II calculator?

Accepted Answer

To plot a graph with your CASIO GRAPH 35+E II calculator, follow the steps below:

1. Turn on the calculator

Press the ON button to turn on the calculator.

2. Access graph mode

Press the MODE button.
Select the Graph option (or Graphe depending on your device's language) by entering the corresponding number.

3. Enter a function

Press the Y= button to access the function entry screen.
Enter the equation of the function you want to plot, for example Y1=X^2 for a parabola.

4. Configure the graph window

Press SHIFT then F2 (which corresponds to WINDOW) to access the window settings.
Set the values of Xmin, Xmax, Ymin, and Ymax according to the range you wish to display.

5. Plot the graph

Press the GRAPH button to display the graph of the entered function.

6. Analyze the graph

Use the arrow keys to navigate on the graph.
You can obtain precise information about specific points on the graph.

For more advanced features or additional details, refer to the official user manual of your CASIO GRAPH 35+E II calculator.

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