Question 453191
f(x)=4x over the square root of x minus 4 find the domain
..
f(x)=4x/√(x-4)
There are two restrictions here: The radican inside the sqrt must be ≥0 and the denominator must ≠0
x-4≥0
x≥4
however x=4 is not allowed because it makes the denominator=0
domain: (4,∞)