Question 551922
f(x) = sqrt {x-1}

The domain is all values that x can take on.

I'll set the insides greater-than-or-equal-to zero, and solve. The result will be my domain.


x - 1 ≥ 0


Adding 1 to both sides of the inequality, I get:

x ≥ 1


The domain is "all x ≥ 1."