Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
For
x
≠
4
x\ne4
x
=
4
, define
f
(
x
)
=
(
x
−
4
)
(
x
+
2
)
x
−
4
f(x)=\dfrac{(x-4)(x+2)}{x-4}
f
(
x
)
=
x
−
4
(
x
−
4
)
(
x
+
2
)
. Which set describes the domain of
f
′
(
x
)
f'(x)
f
′
(
x
)
? a) All real numbers except
−
2
-2
−
2
b) All real numbers c) All real numbers except
4
4
4
d) All real numbers except
4
4
4
and
−
2
-2
−
2
Browse the problem library