Tag Archives: definition of function

Strengths and limitations of each representation of function

Function is defined in many textbooks as a correspondence between two sets x and y such that for every x there corresponds a unique y. Of course there are other definition. You can check my post on the evolution of the definition of function. Knowing the definition of a concept however does not guarantee understanding… Read More »

Evolution of the definition of function

How do you define function? Do you teach relation first before teaching function?  Does knowing about relation a pre-requisite to function understanding? The concept of function “was born as a result of a long search after a mathematical model for physical phenomena involving variable quantities” (Sfard, 1991, p. 14). In 1755, Euler (1707-1783) elaborated on… Read More »

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