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Mathematics
Problem
Define
k
(
x
)
=
∣
x
2
−
4
x
−
2
∣
k(x)=\left|\dfrac{x^{2}-4}{x-2}\right|
k
(
x
)
=
x
−
2
x
2
−
4
for
x
≠
2
x\ne 2
x
=
2
. Decide whether the point
x
=
2
x=2
x
=
2
is a removable or a non-removable discontinuity of
k
k
k
.
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