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Mathematics
Mathematics
Problem
The value of
f
f
f
at
x
=
0
x = 0
x
=
0
so that the function
f
(
x
)
=
2
x
−
2
−
x
x
,
x
≠
0
f(x) = \frac{2^x - 2^{-x}}{x}, x \neq 0
f
(
x
)
=
x
2
x
−
2
−
x
,
x
=
0
, is continuous at
x
=
0
x = 0
x
=
0
, is (a) 0 (b)
log
2
\log 2
lo
g
2
(c) 4 (d)
log
4
\log 4
lo
g
4
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