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Other Examples: A rational function is the ratio of two polynomials P(x) and Q(x) like this. Except that Q(x) cannot be zero (and anywhere that Q(x)=0 is undefined) A root (or zero) is where the expression is equal to zero:
understand exponential functions and how they work. Exponential functions are function where the variable x is in the exponent . Some examples of exponential functions are f(x) = 2 x , f(x) = 5 x â 2 , or f(x) = 9 2x + 1 . In each of the three examples the variable x is in the exponent, which makes each of the examples exponential functions. To begin graphing exponential functions we will start with two examples. exponential functions by making a table of values and plotting the points. examples we will take a look at the s imilarities and differences between the two graphs.