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López, Jonathan; Robles, Izraim; Martínez-Planell, Rafael – International Journal of Mathematical Education in Science and Technology, 2016
Action-Process-Object-Schema theory (APOS) was applied to study student understanding of quadratic equations in one variable. This required proposing a detailed conjecture (called a genetic decomposition) of mental constructions students may do to understand quadratic equations. The genetic decomposition which was proposed can contribute to help…
Descriptors: Equations (Mathematics), Semi Structured Interviews, Undergraduate Students, Calculus
Man, Yiu-Kwong – International Journal of Mathematical Education in Science and Technology, 2007
A simple algorithm for computing the partial fraction expansions of proper rational functions with multiple poles is presented. The main idea is to use the Heaviside's cover-up technique to determine the numerators of the partial fractions and polynomial divisions to reduce the multiplicities of the poles involved successively, without the use of…
Descriptors: Calculus, Mathematics, Computation, Methods
Asiru, M. A. – International Journal of Mathematical Education in Science and Technology, 2007
Under predetermined conditions on the roots and coefficients, necessary and sufficient conditions relating the coefficients of a given cubic equation x[cubed] + ax[squared] + bx + c = 0 can be established so that the roots possess desired properties. In this note, the condition for one root of a cubic equation to be "the negative reciprocal of…
Descriptors: Equations (Mathematics), Algebra, College Mathematics, Computation