Casio FX-991 EX classwiz calculator tutorial (perfect for algebra, FE exam, EIT exam)

blackpenredpen
12 Dec 201607:54

TLDRThis tutorial introduces the Casio FX-991 EX classwiz calculator, ideal for algebra and engineering exams. The presenter demonstrates solving quadratic equations, systems of equations, complex numbers, logarithms, inverse sine, summation, derivatives, and integrals. Viewers are also invited to participate in a giveaway by subscribing and commenting on the video for a chance to win a calculator by December 31st, 2016.

Takeaways

  • 🔢 The video provides a tutorial on using the Casio FX-991 EX classwiz calculator, highlighting its capabilities for algebra and various exams.
  • 🛒 The calculator's price at Target, including tax, is approximately $21.
  • 🎁 There is a giveaway opportunity for a calculator; viewers are encouraged to watch the video until the end to learn how to participate.
  • 📚 The calculator can solve quadratic equations, displaying both the roots and the vertex of the parabola.
  • 🔍 For solving systems of equations, the calculator requires the number of variables and their coefficients, handling up to three variables in this example.
  • 🔑 The calculator has a complex number mode, allowing for calculations involving 'i', the imaginary unit.
  • 📈 The device can compute logarithms with any base, demonstrated with log base 8 of four.
  • 🔄 To switch between modes, such as from complex to standard calculation, the menu and calculate buttons are used.
  • ∑ The summation function is available, demonstrated with a summation from x=3 to x=8.
  • 📉 The derivative function provides the value of the derivative at a given x value, but does not output the derivative expression.
  • ∫ The integral function calculates the definite integral of a function over a specified interval.
  • 🎉 The video concludes with instructions on how to enter the giveaway, which involves subscribing to the channel and commenting on the video for a chance to win based on the number of likes received by December 31st, 2016.

Q & A

  • What is the purpose of the video?

    -The purpose of the video is to provide a tutorial on how to use the Casio FX-991 EX classwiz calculator for solving various math problems and to announce a giveaway of the calculator.

  • How much does the Casio FX-991 EX classwiz calculator cost at Target after tax?

    -The cost of the Casio FX-991 EX classwiz calculator at Target after tax is approximately $21.

  • What is the first math problem the tutorial solves on the calculator?

    -The first math problem the tutorial solves is a quadratic equation.

  • How does the calculator handle equations with a higher degree than two?

    -The calculator can also solve polynomial equations with degrees 3 and 4, not just quadratic equations.

  • What key combination is used to find the vertex of a parabola on the calculator?

    -The script does not specify the exact key combination for finding the vertex, but it mentions that the calculator will display the vertex information after solving the quadratic equation.

  • How does the calculator solve a system of equations?

    -The calculator solves a system of equations by entering the coefficients and constants into the calculator, selecting the number of variables, and pressing equal to get the solution.

  • What is the process for entering complex numbers on the calculator?

    -To enter complex numbers, you go to the menu, select complex numbers mode, and use the 'I' button to represent the imaginary unit, entering the real and imaginary parts as instructed.

  • How can you change the base of a logarithm on the calculator?

    -You can change the base of a logarithm by using the log base button and then entering the desired base before entering the argument of the logarithm.

  • What is the process to find the inverse sine of a number in degrees on the calculator?

    -To find the inverse sine in degrees, you press shift, then the sign button, enter the fraction, and ensure the calculator is set to degree mode.

  • How does the calculator handle summation and differentiation functions?

    -The calculator has specific keys for summation and differentiation. For summation, you enter the function and the limits of summation. For differentiation, you enter the function and the value of x at which you want to find the derivative.

  • What is the method to find the integral of a function on the calculator?

    -To find the integral, you use the integral function key, enter the function inside the integral, and specify the limits of integration.

  • How can viewers participate in the calculator giveaway?

    -Viewers can participate in the giveaway by subscribing to the channel and writing a comment on the video. The winner will be the person with the most likes on their comment by December 31st, 2016.

Outlines

00:00

📚 Scientific Calculator Tutorial

This paragraph introduces a tutorial on using a scientific calculator for solving various mathematical problems. The speaker demonstrates how to solve a quadratic equation using the calculator's equation-solving mode, explaining the process of entering the equation in standard form and obtaining the roots. The video also covers finding the vertex of a parabola, which represents the minimum or maximum point. The tutorial continues with solving a system of equations, entering coefficients, and obtaining the values for variables x, y, and z. The speaker emphasizes the convenience of the calculator's features and encourages viewers to watch the entire video for a giveaway opportunity.

05:00

🎁 Calculator Giveaway and Advanced Functions

The second paragraph focuses on a giveaway of a scientific calculator and introduces more advanced calculator functions. The speaker explains how to perform calculations with complex numbers, logarithms with any base, inverse sine in both degree and radian modes, and summation of a series. Additionally, the paragraph covers derivative calculation for a given function, noting that the calculator provides the value rather than the expression. The integral of a function is also demonstrated, showcasing the calculator's ability to compute definite integrals. The speaker concludes by explaining the giveaway rules, which involve subscribing to the channel and commenting on the video for a chance to win the calculator based on the number of likes on the comment by a specified date. The paragraph ends with a call to action for viewers to participate in the giveaway and share the video.

Mindmap

Keywords

💡Scientific Calculator

A scientific calculator is an electronic device used for performing complex mathematical calculations, including those beyond the basic arithmetic operations. In the context of the video, the Casio FX-991 EX classwiz calculator is showcased as a tool for solving various mathematical problems such as quadratic equations, systems of equations, and complex numbers. The video demonstrates how to use the calculator's features to perform these calculations efficiently.

💡Quadratic Equation

A quadratic equation is a polynomial equation of the second degree, typically presented in the form ax^2 + bx + c = 0. The video tutorial shows how to use the calculator to solve such equations by entering the coefficients and using the equation-solving function. The example given is a quadratic equation where the calculator provides two solutions: x = 4 and x = -2/5.

💡Vertex

In the context of a quadratic equation, the vertex represents the highest or lowest point of the parabola represented by the equation. The video explains that the calculator can determine the vertex of a parabola by solving for the x and y values that correspond to the minimum or maximum point. For instance, the tutorial mentions finding the vertex when x is equal to 9/5 and the corresponding y value is 21/5.

💡System of Equations

A system of equations refers to a set of two or more equations that need to be solved simultaneously. The video demonstrates how to input and solve a system of three equations using the calculator. The process involves entering the coefficients for each variable and the constants on the right side of the equations, and the calculator provides the values for each variable.

💡Complex Numbers

Complex numbers are numbers that consist of a real part and an imaginary part, typically written in the form a + bi, where 'i' is the imaginary unit. The video tutorial explains how to enter and perform calculations with complex numbers using the calculator's complex number mode. An example given is the calculation of 8 - 2i and 5 + 4i.

💡Logarithm

A logarithm is the inverse operation to exponentiation, indicating the power to which a certain base must be raised to produce a given number. The video shows how to calculate logarithms with different bases using the calculator. For example, the tutorial calculates the logarithm base 8 of 4, demonstrating the use of the 'log' function with a specified base.

💡Inverse Sine

The inverse sine function, often denoted as sin^(-1) or arcsin, is used to find the angle whose sine is a given value. In the video, the calculator is used to calculate the inverse sine of 1/2, which is shown as 30° when the calculator is set to degree mode. The tutorial also explains how to switch to radian mode for such calculations.

💡Summation

Summation is a mathematical operation that adds a sequence of numbers to find their total. The video demonstrates the use of the summation function on the calculator to calculate the sum of a series, such as the sum of 4x - 1 from x = 3 to x = 8. The calculator provides the result of the summation, which in the example is 126.

💡Derivative

A derivative in calculus represents the rate at which a function is changing at a certain point. The video tutorial shows how to calculate the derivative of a function using the calculator. It's important to note that the calculator provides the value of the derivative at a specific point, rather than the derivative function itself. An example used is the derivative of x/(1 + x^2) at x = 3, which is approximately -0.08.

💡Integral

An integral in calculus is used to find the accumulated value of a function over an interval, effectively the area under the curve. The video demonstrates how to calculate the definite integral of a function, such as the integral of the square root of x from 1 to 4. The calculator provides the result of the integral, which in this case is 14/3.

Highlights

Tutorial on using the Casio FX-991 EX classwiz calculator for algebra and engineering exams.

The calculator costs approximately $21 after tax at Target.

A giveaway for a calculator is included in the video.

Solving quadratic equations using the calculator's equation mode.

Entering the equation in standard form for the calculator to solve.

Finding the vertex of a parabola using the calculator.

Solving a system of equations with three variables.

Entering coefficients and constants for system of equations.

Calculating complex numbers using the calculator's complex mode.

Entering and solving logarithms with any base on the calculator.

Finding the inverse sine of a fraction using the calculator.

Switching between degree and radian modes for calculations.

Performing summation operations with the calculator.

Calculating the derivative of a function using the calculator.

Converting decimal results to fractions on the calculator.

Calculating integrals with the calculator, including radicals.

Instructions on how to participate in the calculator giveaway.

Encouragement for viewers to comment for a chance to win the calculator.

The importance of creativity and humor in the comments for the giveaway.

The deadline for the giveaway is December 31st, 2016.

A thank you message to viewers for watching the tutorial.

Casual Browsing

Is Casio fx-991-CW the BEST NON-GRAPHING CALCULATOR???

2024-09-05 02:15:00

Casio fx-991CW Scientific Calculator Review

2024-09-27 10:00:00

Evaluating Definite Integral and Differentiation Scientific Calculator | Casio fx-991MS

2024-09-27 10:27:00

Introduction to basic functions of scientific calculator (casio fx-991ms)

2024-09-27 10:17:00

Calculator Techniques FOR BOARD EXAM - Evaluating Functions and Simplifying Expressions 10 EXAMPLES

2024-08-29 05:00:00

Calculator Techniques for ENGINEERING BOARD EXAM: Solving for X, USING SHIFT SOLVE | 10 PROBLEMS

2024-08-29 06:35:00