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Mathematics
Mathematics
Problem
Find the points of discontinuity of
y
=
1
u
2
+
u
−
2
y = \frac{1}{u^2 + u - 2}
y
=
u
2
+
u
−
2
1
, where
u
=
1
x
−
1
u = \frac{1}{x-1}
u
=
x
−
1
1
.
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