Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
For a rational function
MATHEMATICS · Single correct · GCSE · Mathematics · Algebra · Algebra
Problem
For a rational function
f
(
x
)
=
P
(
x
)
Q
(
x
)
f(x)=\dfrac{P(x)}{Q(x)}
f
(
x
)
=
Q
(
x
)
P
(
x
)
, an excluded value of
f
f
f
is: (a) any real number for which
f
(
x
)
=
1
f(x)=1
f
(
x
)
=
1
(b) any real number that makes
P
(
x
)
=
0
P(x)=0
P
(
x
)
=
0
(c) any real number that makes
Q
(
x
)
=
0
Q(x)=0
Q
(
x
)
=
0
(d) any real number that makes both
P
(
x
)
=
0
P(x)=0
P
(
x
)
=
0
and
Q
(
x
)
=
0
Q(x)=0
Q
(
x
)
=
0
Related theory
Algebraic Manipulation
Sets
Rational Functions
Algebra
Browse the problem library