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Precalc Help pls!!! I am stuck on this one so pls help

Precalc Help pls!!! I am stuck on this one so pls help-example-1
User Manthan
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1 Answer

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Answer:

x not equal to 7

Explanation:

(f ° g)(x)

= f (g(x))

So you are scrunching up the entire g(x) function and stuffing it into the x in the f(x).

This gives you

4/|x-7| see image.

x cannot be 7, bc if x is 7 the denominator would be 0 and that's never allowed. So the domain must be restricted and x not equal to 7.

Precalc Help pls!!! I am stuck on this one so pls help-example-1
User Muthuraj
by
3.7k points