For each pair of functions, f and g, determine the domain of f + g f(x) = 3x + 7, g(x) =2/(x-5) Is this the same with finding (f + g)(x)?
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Originally Posted by imperical56 For each pair of functions, f and g, determine the domain of f + g f(x) = 3x + 7, g(x) =2/(x-5) Is this the same with finding (f + g)(x)? $\displaystyle \text{dom} (f + g) = \text{dom} \, f \cap \text{dom} \, g$.
will this be the right answer? ( -œ, œ) U (-œ, 5) U (5, œ) where œ means infinity
Originally Posted by imperical56 will this be the right answer? ( -œ, œ) U (-œ, 5) U (5, œ) where œ means infinity No. It's (-œ, 5) U (5, œ). Think about it.
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