(f o g)(x) algebra f o g

Algebra
Tutor: None Selected Time limit: 1 Day

For f(x)= x/x+1 and g(x)=9/x  find 

1. (f o g)(x)

2. domain of f o g

Jun 7th, 2015

Thank you for the opportunity to help you with your question!

1. (fog)(x) = (9/x) / (9/x + 1) = 9 / x+9

2. the domain is all x except x = -9

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 7th, 2015

Oh, let me add one more thing. x also cannot be ZERO because the original equation has x in the denominator.

Jun 7th, 2015

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