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Mathematics
Mathematics
Problem
A function
f
f
f
has derivative
f
′
(
x
)
=
x
2
−
1
x
−
2
,
x
≠
2
,
f'(x)=\frac{x^2-1}{x-2}, \qquad x\neq2,
f
′
(
x
)
=
x
−
2
x
2
−
1
,
x
=
2
,
and
f
′
(
2
)
f'(2)
f
′
(
2
)
is not defined. Determine all
x
x
x
-values at which
f
f
f
is not differentiable.
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