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Giovanni Vincenzi – International Journal of Mathematical Education in Science and Technology, 2025
Using the basic properties of the base-b representation of rational numbers, we will give an elementary proof of Gauss's lemma: "Every real root of a monic polynomial with integer coefficients is either an integer or irrational." The paper offers a new perspective in understanding the meaning of 'irrational numbers' from a deeper…
Descriptors: Mathematical Logic, Validity, Numbers, Mathematics
F. M. S. Lima – International Journal of Mathematical Education in Science and Technology, 2025
In this short note I present an elementary proof of irrationality for the number "e," the base of the natural logarithm. It is simpler than other known proofs as it does not use comparisons with geometric series, nor Beukers' integrals, and it does not assume that "e" is a rational number from the beginning.
Descriptors: Mathematical Logic, Number Concepts, Geometry, Equations (Mathematics)
Wha-Suck Lee – International Journal of Mathematical Education in Science and Technology, 2024
We view the (real) Laplace transform through the lens of linear algebra as a continuous analogue of the power series by a negative exponential transformation that switches the basis of power functions to the basis of exponential functions. This approach immediately points to how the complex Laplace transform is a generalisation of the Fourier…
Descriptors: Numbers, Algebra, Equations (Mathematics), Mathematical Concepts
Rani, Narbda; Mishra, Vinod – International Journal of Mathematical Education in Science and Technology, 2022
This paper contains interesting facts regarding the powers of odd ordered special circulant magic squares along with their magic constants. It is shown that we always obtain circulant semi-magic square and special circulant magic square in the case of even and odd positive integer powers of these magic squares respectively. These magic squares…
Descriptors: Numbers, Mathematical Logic, Mathematics Education, Mathematical Concepts
Ullah, Mukhtar; Aman, Muhammad Naveed; Wolkenhauer, Olaf; Iqbal, Jamshed – International Journal of Mathematical Education in Science and Technology, 2022
The natural exponential and logarithm are typically introduced to undergraduate engineering students in a calculus course using the notion of limits. We here present an approach to introduce the natural exponential/logarithm through a novel interpretation of derivatives. This approach does not rely on limits, allowing an early and intuitive…
Descriptors: Engineering Education, Teaching Methods, Mathematics Instruction, Numbers
Rock, J. A. – International Journal of Mathematical Education in Science and Technology, 2022
Every application of integration by parts can be done with a tabular method. The trick is to identify and consider each new integral in the table before deciding how to proceed. This paper supplements a classic introduction to integration by parts with a particular tabular method called Row Integration by Parts (RIP). Approaches to tabular methods…
Descriptors: Calculus, Accounting, Mathematical Formulas, Numbers
Sean Chorney – International Journal of Mathematical Education in Science and Technology, 2024
In a pre-service mathematics methods class I taught, in which we mathematized political districting (first horizontally, then vertically), student questions led to engaging mathematics, in particular, the development of a new number sequence.
Descriptors: Elections, Mathematics Instruction, Numbers, Political Attitudes
Cereceda, José Luis – International Journal of Mathematical Education in Science and Technology, 2020
In this paper, we first focus on the sum of powers of the first n positive odd integers, T[subscript k](n)=1[superscript k]+3[superscript k]+5[superscript k]+...+(2n-1)[superscript k], and derive in an elementary way a polynomial formula for T[subscript k](n) in terms of a specific type of generalized Stirling numbers. Then we consider the sum of…
Descriptors: Numbers, Arithmetic, Mathematical Formulas, Computation
Abd-Elhameed, W. M.; Zeyada, N. A. – International Journal of Mathematical Education in Science and Technology, 2017
This paper is concerned with developing a new class of generalized numbers. The main advantage of this class is that it generalizes the two classes of generalized Fibonacci numbers and generalized Pell numbers. Some new identities involving these generalized numbers are obtained. In addition, the two well-known identities of Sury and Marques which…
Descriptors: Generalization, Numbers, Number Concepts, Number Systems
Pruitt, Kenny; Shannon, A. G. – International Journal of Mathematical Education in Science and Technology, 2018
The purpose of this paper is to consider analogues of the twin-prime conjecture in various classes within modular rings.
Descriptors: Mathematics Instruction, Numbers, Teaching Methods, Arithmetic
Lima, F. M. S. – International Journal of Mathematical Education in Science and Technology, 2020
In this note, I present an 'easy-to-be-remembered' shortcut for promptly solving the ubiquitous integral [line integral] x[superscript n] e[superscript alpha x] dx for any integer n>0 using only the successive derivatives of x[superscript n]. Some interesting applications are indicated. The shortcut is so simple that it could well be included…
Descriptors: Calculus, Number Concepts, Problem Solving, Mathematical Applications
Firozzaman, Firoz; Firoz, Fahim – International Journal of Mathematical Education in Science and Technology, 2017
Understanding the solution of a problem may require the reader to have background knowledge on the subject. For instance, finding an integer which, when divided by a nonzero integer leaves a remainder; but when divided by another nonzero integer may leave a different remainder. To find a smallest positive integer or a set of integers following the…
Descriptors: Mathematics Instruction, Numbers, Mathematical Concepts, Equations (Mathematics)
Dobbs, David E. – International Journal of Mathematical Education in Science and Technology, 2018
For a function "f": [real numbers set][superscript n]\{(0,…,0)}[right arrow][real numbers set] with continuous first partial derivatives, a theorem of Euler characterizes when "f" is a homogeneous function. This note determines whether the conclusion of Euler's theorem holds if the smoothness of "f" is not assumed. An…
Descriptors: Mathematical Logic, Validity, Mathematics Instruction, Calculus
Ghergu, Marius – International Journal of Mathematical Education in Science and Technology, 2018
We explore the connection between the notion of critical point for a function of one variable and various inequalities for iterated exponentials defined on the positive semiline of real numbers.
Descriptors: Mathematics, Mathematics Instruction, Mathematical Concepts, Numbers
Sprows, David – International Journal of Mathematical Education in Science and Technology, 2017
The fundamental theorem of arithmetic is one of those topics in mathematics that somehow "falls through the cracks" in a student's education. When asked to state this theorem, those few students who are willing to give it a try (most have no idea of its content) will say something like "every natural number can be broken down into a…
Descriptors: Arithmetic, Mathematical Logic, Number Concepts, Numeracy