Casio FX-991ES Plus and FX-115ES Plus 2nd Edition, Learn All Features

Equaser・2 minutes read

Ahmad Shamshiri presents a tutorial covering all features of the Casio fx991es plus second edition calculator, including special functions, settings adjustments, trigonometric calculations, memory functions, unit conversions, complex numbers, and matrix operations. The tutorial also demonstrates how to perform factorial, polar and rectangular coordinate conversions, calculate modulus, permutation, combination, prime factorization, summation, product, absolute values, and computational formulas, as well as solve equations and perform integral calculations with accuracy depending on the input values and modes selected.

Insights

  • The tutorial on the Casio fx991es plus second edition calculator by Ahmad Shamshiri thoroughly covers various functions, from basic arithmetic to trigonometric, logarithmic, engineering notations, and memory operations, offering a comprehensive guide on utilizing the calculator efficiently.
  • The calculator provides a wide range of features, including unit conversions, constants, modulus calculations, permutation, combination, complex number operations, summation, product, GCD, LCM, random number generation, formula evaluation, equation solving, matrix operations, integral calculations, and base conversions, making it a versatile tool for mathematical computations across different domains.

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Recent questions

  • How do I calculate trigonometric functions?

    By inputting the angle in degrees and pressing the corresponding function button.

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Summary

00:00

Tutorial on Casio fx991es Plus Calculator

  • Ahmad Shamshiri from Canada presents a tutorial on the Casio fx991es plus second edition calculator.
  • The new edition is similar to the previous one, with only default settings differing for the Canadian version.
  • The tutorial covers all features of the calculator, with examples provided for each feature.
  • The calculator comes with a protective case similar to the older version.
  • Different key functions are explained, including the use of shift for yellow keys and alpha for purple-red keys.
  • The calculator has an on/off key, with an automatic turn-off feature after 10 minutes.
  • Various modes are available for different computations, including normal operations, statistics, equations, and more.
  • The calculator allows for basic operations like addition, subtraction, multiplication, and division.
  • Special functions like inserting values, recalling previous answers, and simplifying fractions are demonstrated.
  • Additional settings such as screen contrast, significant digits, and display formats can be adjusted in the setup menu.

17:45

Calculator Functions for Trigonometry and More

  • To calculate the sine of 25 degrees, press the sine button and then the number 25, followed by the equal sign to display the result.
  • For logarithmic calculations, enter the desired base (e.g., 2) by pressing the log base button and then the number, followed by the equal sign to obtain the result.
  • To calculate the inverse of a number, input the number and then use the power button to raise it to the power of -1.
  • For engineering notation, press the engineering button to display values in scientific notation and adjust significant digits by using the shift button.
  • Convert angles from degrees to radians by setting the calculator to radians, entering the degree value, and using the appropriate trigonometric function.
  • Calculate trigonometric functions like cosine and sine by inputting the angle in degrees and pressing the corresponding function button.
  • Utilize hyperbolic functions by selecting the hyperbolic function button, entering the value, and pressing equal to obtain the result.
  • Solve percentage questions by calculating percentages of values, determining percentages of a value, or finding the original value based on a percentage.
  • Add or subtract values by inputting the numbers and using the appropriate mathematical operators on the calculator.
  • Use the calculator's table function to compare two functions by entering the functions and the range of values to evaluate.

34:21

"Advanced Calculator Functions for Mathematical Operations"

  • Press "m+" to add to memory
  • Memory contains 18
  • Perform calculation: 1.56 - 456 x 65
  • Subtract result from memory by pressing "shift" + "m-"
  • Clear memory by pressing 0, "shift store", then "m"
  • Clear all memories by pressing "shift clear"
  • Calculate factorial: 4!
  • Convert polar to rectangular coordinates: r = 6, θ = 36.8
  • Convert rectangular to polar coordinates: x = 4, y = -5
  • Set recurring numbers by pressing "shift setup"
  • Utilize unit conversion feature for various conversions
  • Access constants like mass of electron, Faraday constant
  • Calculate modulus: 147 % 3
  • Determine permutation and combination: 49C6, 49P6
  • Perform prime factorization: 42 = 2 x 3 x 7
  • Calculate summation and product of equations
  • Enter complex numbers and perform operations
  • Find argument and conjugate of complex numbers
  • Calculate absolute values and verify equations
  • Determine greatest common divisor (gcd) and least common multiple (lcm)
  • Generate random numbers within specified ranges
  • Utilize the "calc" feature to evaluate formulas
  • Use the "solve" feature to find values of x in equations

51:35

Equation input, solve, matrix, integral calculations explained.

  • To input an equation, use the format alpha y, shift equal, alpha a, alpha x squared, alpha b, and an equal sign.
  • To solve the equation, press shift solve after entering the values, such as 125, 3, 4, and 5, to find x equal to 6.35.
  • Left and right division uses iteration methods, with zero indicating exact values.
  • Larger numbers result in less accuracy, while smaller numbers provide more accurate results.
  • For base calculations in binary, decimal, or hexadecimal, switch modes using mode base n plus 4.
  • To convert binary to decimal, enter the binary value and press equal, then switch to dec for the decimal value.
  • Matrix calculations involve storing values in matrices A, B, and C, performing operations like addition and multiplication.
  • To find the inverse of a matrix, press shift 4, select the matrix, and press the inverse button.
  • For integral calculations, input the equation and bounds to find the numerical result.
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