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Mathematics
Problem
Let
f
f
f
be defined by
f
(
x
)
=
x
2
−
9
x
−
3
f(x)=\dfrac{x^{2}-9}{x-3}
f
(
x
)
=
x
−
3
x
2
−
9
for
x
≠
3
x\neq 3
x
=
3
. What type of discontinuity does
f
f
f
exhibit at
x
=
3
x=3
x
=
3
?
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