SOLUTION: Suppose f is a function that takes a real number x and performs the following three steps in the order given: (1) square root; (2) subtract 13; (3) make the quantity the denominato

Algebra ->  Functions -> SOLUTION: Suppose f is a function that takes a real number x and performs the following three steps in the order given: (1) square root; (2) subtract 13; (3) make the quantity the denominato      Log On


   

Question 667868: Suppose f is a function that takes a real number x and performs the following three steps in the order given: (1) square root; (2) subtract 13; (3) make the quantity the denominator of a fraction with numerator 4. Find an expression for
f(x)
and find its domain.
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
f(x) = %284%29%2F%28sqrt%28x%29-13%29
...
0 = sqrt%28x%29-13
13 = sqrt%28x%29
13%5E2+=+sqrt%28x%29%5E2
169 = x
...
All real numbers excluding 169.
(-infinity, 169) U (169, infinity)
.....................
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