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1 April, 14:01

Which of the following could be an example of a function with a range (-∞, a] and a domain [b, ∞) where a < 0 and b < 0?

A. ƒ (x) = √ (x-a) + b

B. ƒ (x) = 3√ (x-b) + a

C. ƒ (x) = - 3√ (x+a) - b

D. ƒ (x) = - √ (x+b) - a ... ?

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Answers (1)
  1. 1 April, 14:24
    0
    The answers are

    B. ƒ (x) = 3√ (x-b) + a for [b, ∞)

    proof

    B. ƒ (x) = 3√ (x-b) + a for [b, ∞)

    the domain is x-b>=0 implies x>=b it is the same of x is element of [b, ∞)
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