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Mathematics
Mathematics
Problem
If
lim
x
→
a
[
sin
−
1
2
x
1
+
x
2
]
\lim_{x \rightarrow a} \left[ \sin^{-1} \frac{2x}{1+x^2} \right]
lim
x
→
a
[
sin
−
1
1
+
x
2
2
x
]
does not exist, then the number of possible values of
a
a
a
, is Note:
[
k
]
[k]
[
k
]
denotes the greatest integer less than or equal to
k
k
k
. (a) 2 (b) 3 (c) 4 (d) 5
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