Question 1037101
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I've been given the following question and I'm completely lost:


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f  is a function that takes a real number x and performs these three steps in the order given:

		(1) Take the absolute value.                Abs. value of x is |x|.

		(2) Subtract 4 from the result.             |x|-4

		(3) Take the reciprocal of the result.      f(x) = {{{1/(abs(x)-4)}}}.

(That is, make the quantity the denominator of a fraction with numerator 1.)

	(a) Find an expression for f (x).  (no explanation required)     f(x) = {{{1/(abs(x)-4)}}}.


	(b) State the domain of f.   (no explanation required)    The domain is the set of all real numbers except of -4 and 4   
                                                                  ( dividing by zero is prohibited ).
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