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Question
Let D be the domain of the real valued function f defined by f(x) = `sqrt(25 - x^2)`. Then, write D
Solution
Given real valued function f(x), such that f(x) = `sqrt(25 - x^2)`
Since f(x) is reaal valued
We must have
25 – x2 ≥ 0
⇒ x2 ≤ 25
⇒ – 5 ≤ x ≤ 5
⇒ The Domain D = [–5, 5]
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