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What is the domain of the function

j(x) = 1/(x + 8) + 1/(x^2 + 8) + 1/(x^4 + 8)

Express your answer as a union of intervals.

 Feb 14, 2021
 #1
avatar+29086 
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Well...... you cannot have a denominator = 0

 

so x cannot equal -8        all other REAL values of x will result in non-zero denominators

 

domain =     (-∞,-8) U (-8,+∞)

 Feb 14, 2021

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