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Mathematics
Mathematics
Problem
If
f
(
x
)
=
x
2
−
1
x
−
1
f(x) = \frac{x^2-1}{x-1}
f
(
x
)
=
x
−
1
x
2
−
1
. Discuss the continuity at
x
→
1
x \to 1
x
→
1
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