Calculator hacks and functions of Casio FX-991 ES for IGCSE students:
Calculators are essential tools for students, especially those studying mathematics and science subjects. The Casio FX-991 ES calculator is a popular model used by most of students around the world, including those studying for the IGCSE exams. However, 90% of students are not aware of the various hacks and tricks that can make their calculators even more useful. In this article, we will explore six of the top calculator hacks for the Casio FX-991 ES that can help IGCSE students.
Solving Equations:
A notable feature of the Casio FX-991 ES calculator particularly for IGCSE Mathematics 0580 is its equation mode, which allows students to solve linear, quadratic, and cubic equations easily. To use this feature, simply select “EQN” mode by pressing the “MODE” button and selecting “EQN” from the menu.
Once in equation mode, you can input the coefficients of the equation using the calculator’s number keys. Then, press the “=” button to see the solution. The calculator will display the roots of the equation, which can be real or complex numbers, depending on the equation.
For example, if you want to solve the quadratic equation x^2 + 2x + 1 = 0, you will enter “1, 2, 1” (the coefficients of the equation) and press “=” to see that the solution is x=-1. Alternatively, you could use the quadratic formula in equation mode by inputting “1, 2, 1, 0” (the coefficients of the equation and 0 as the constant term) and pressing “=” to get the same solution.if you want to get register yourself so just be in touch with us by clicking here.
This feature can save students 15-20 min of time and effort when solving complex equations. It is important to note, however, that understanding the underlying concepts and theory is still crucial to succeeding in math exams. So, while the Casio FX-991 ES calculator is a powerful tool, it should not be relied on solely for solving equations. Students should still work to understand the steps involved in solving equations by hand and use the calculator as a supplement to their learning.
Matrix Operations:
The Casio FX-991 ES calculator can perform matrix operations, such as matrix multiplication, addition, and subtraction. To use this feature, you need to first enter the matrix by pressing the “MODE” button and selecting the matrix option. Once you have entered the matrix, you can perform operations on it by using the matrix functions under the “MAT” button. we just launch this syllabus for your ease if you are interested to be a part of our matrix operations learning programs so be a part of our excellence.
Calculating Trigonometric Functions:
The Casio FX-991 ES calculator can also calculate trigonometric functions, such as sine, cosine, and tangent. To calculate these functions, simply enter the angle in degrees or radians and press the corresponding function key (sin, cos, or tan). The calculator will then display the result.
Converting Units:
The Casio FX-991 ES calculator can convert between different units of measurement, such as inches to centimeters or pounds to kilograms. To use this feature, press the “SHIFT” button and then the “CONV” button. From there, select the desired conversion type and input the value that requires conversion.
Calculating Statistical Functions:
The Casio FX-991 ES calculator can perform a wide range of statistical functions, such as finding the mean, median, and standard deviation of a set of data. To use this feature, enter the data into a list by pressing “MODE” and selecting “STAT”. Then, select the statistical function you want to perform from the “STAT” menu.
Coordinate Grid for drawing Graphs:
Another useful feature of the Casio FX-991 ES calculator is the “table mode”, which I use to graph any function. To use this feature, select “TABLE” mode by pressing the “MODE” button and selecting “TABLE” from the menu.
Once in table mode, you can input a function using the calculator’s number keys and the Variable with “Alpha” key. For example, to graph the function y = 2x + 1, you would input “2x+1” and press “=” to see the function on screen and then input starting & ending value of variable x to get coordinate grid for equation. After getting coordinates you can easily plot the coordinates to draw graph.
This feature can be particularly useful for IGCSE students who are studying functions and graphs in mathematics 0580. It allows them to quickly graph any function and visualize how it behaves. However, it is important to remember that understanding the concepts behind the function and graph is crucial to succeeding in exams. So, while the calculator can be a helpful tool, students should still work to understand the theory and concepts involved. In conclusion, the Casio FX-991 ES calculator is a powerful tool that can help IGCSE students in a variety of subjects. By using these hacks and tricks, students can get the most out of their calculator and streamline their problem-solving process. However, it is important to remember that while a calculator can be a valuable tool, it is still important to understand the underlying concepts and theories. So, use these calculator hacks wisely, and remember to study hard and practice regularly to truly excel in your studies.
Written by Hassan Sheikh Head of science & mathematics department, Virtual Academia