Question 238296
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A rational expression is some function of a variable divided by some other (or could be the same) function of a variable, like this:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \frac{f(x)}{g(x)}]


A rational function is a function that is defined by a rational expression, like this:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ h(x)\ =\ \frac{f(x)}{g(x)}]


How that relates to the disciplines/interest areas you mentioned is for you to invent. 


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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