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Mathematics
Problem
Identify the expression that represents a rational function which is NOT a polynomial. a)
p
(
x
)
=
x
+
2
p(x)=\sqrt{x}+2
p
(
x
)
=
x
+
2
b)
f
(
x
)
=
x
2
+
1
x
−
3
f(x)=\dfrac{x^{2}+1}{x-3}
f
(
x
)
=
x
−
3
x
2
+
1
c)
q
(
x
)
=
x
2
+
1
5
q(x)=\dfrac{x^{2}+1}{5}
q
(
x
)
=
5
x
2
+
1
d)
r
(
x
)
=
x
x
r(x)=\dfrac{x}{x}
r
(
x
)
=
x
x
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