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Mathematics
Mathematics
Problem
Discuss the continuity for
f
(
x
)
=
1
−
u
2
2
+
u
2
,
where
u
=
tan
x
.
f(x) = \frac{1-u^2}{2+u^2}, \text{ where } u = \tan x.
f
(
x
)
=
2
+
u
2
1
−
u
2
,
where
u
=
tan
x
.
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