Question

HOW DO YOU FIND THE DOMAIN:
find the domain of f (x) :


f(x)= 4/ x+3

Answer 1

if f(x)=4/(x+3)...then x+3 is not =0.
or x is not = -3. so domain [real numbers]-{3}.
and if f(x)= 4/x +3 , domain [all real numbers]-{0}

Answer 2

coudl you explain this to me, how do you know that.

Answer 3

for any rational number p/q, q \[\neq\]0.
so denominator of function is not =0