e ,
(i)
[
]
1
1
2
2
1
1
2
2
( )
( )
( )
( )
d
d
d
k f
x
k
f
x
k
f
x
k
f
x
dx
dx
dx
+
=
+
(ii)
[
]
1
1
2
2
1
1
2
2
( )
( )
( )
( )
k f
x
k
f
x
dx
k
f
x dx
k
f
x dx
+
=
+
∫
∫
∫
Here k1 and k2 are constants 3 We have already seen that all functions are not differentiable