Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
For a rational function
f
(
x
)
=
P
(
x
)
Q
(
x
)
f(x)=\dfrac{P(x)}{Q(x)}
f
(
x
)
=
Q
(
x
)
P
(
x
)
, the real numbers that must be excluded from its domain are those for which a)
P
(
x
)
=
Q
(
x
)
P(x)=Q(x)
P
(
x
)
=
Q
(
x
)
b)
Q
(
x
)
=
0
Q(x)=0
Q
(
x
)
=
0
c)
P
(
x
)
=
0
P(x)=0
P
(
x
)
=
0
d)
P
(
x
)
Q
(
x
)
=
0
P(x)\,Q(x)=0
P
(
x
)
Q
(
x
)
=
0
Browse the problem library