Question

HELP ! Find the Domain in this question

Answer 1

$x-3\not=0\\ x\not=3\\ D:x\in\mathbb{R}\setminus\{3\}$

Answer 2

See that denominator cannot be zero, so,

x-3 ≠ 0
x ≠ 3

Domain:

S={x∈R/x≠3}