Q. 3 C4.0( 10 Votes )

# Find the domain a

We know the square of a real number is never negative.

Clearly, f(x) takes real values only when x – 1 ≥ 0

x ≥ 1

x [1, ∞)

Thus, domain of f = [1, ∞)

When x ≥ 1, we have x – 1 ≥ 0

Hence,

f(x) [0, ∞)

Thus, range of f = [0, ∞)

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