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State the domain of each function using interval notation
pls show ur work!!

State the domain of each function using interval notation pls show ur work!!-example-1
User Bulbasaur
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1 Answer

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15 votes

Answer:

(-∞ , -6] ∪ [6 , +∞)

Explanation:

Let D be the domain of f .

D = {x ∈ IR ; where x² - 36 ≥ 0}

x² - 36 ≥ 0

⇔ x² ≥ 36

⇔ x² ≥ 6²

⇔ √(x²) ≥ √(6²)

⇔ |x| ≥ 6

⇔ x ∈ (-∞ , -6] ∪ [6 , +∞)

User Yogendra
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