Question

Write domain of f(x) = √x-1​

Answer 1

Answer:

$x \in[1, \infty )$

Step-by-step explanation:

For f(x) to be real,

(x-1) ≥ 0

x ≥ 1

$x \in[1,\infty )$

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Answer 2

f(x) = √(x-1)

For f(x) to be real,

x - 1 ≥ 0

=> x ≥ 1