Q.35 Find the value of k for which
f
(
x
)
=
1
-
cos
4
x
8
x
2
,
w
h
e
n
x
≠
0
k
,
w
h
e
n
x
=
0
is continous at x=0.
f
(
x
)
=
sin
a
+
1
x
+
sin
x
x
,
f
o
r
x
<
0
x
,
f
o
r
x
=
0
x
+
b
x
2
-
x
b
x
3
2
,
f
o
r
x
>
0
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