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Standard XII
Mathematics
Change of Variables
15. If 2f(X)+...
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15. If 2f(X)+f(2/x)=3x+1, then f(2) equal to
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Q.
If
f
(
x
)
=
x
2
−
3
x
+
5
, then
lim
x
→
2
f
(
x
)
−
f
(
2
)
x
−
2
Q.
If
f
(
2
)
=
4
and
f
′
(
2
)
=
1
, then
lim
x
→
2
x
f
(
2
)
−
2
f
(
x
)
x
−
2
equal to
Q.
If
2
f
(
x
)
−
3
f
(
1
2
)
=
x
2
,
x
is not equal to zero, then f(2) is equal to.
Q.
lim
x
→
2
f
(
x
)
−
f
(
2
)
x
−
2
is equal to
Q.
If
2
f
(
x
)
−
3
f
(
1
x
)
=
x
2
(
x
≠
0
)
, then f(2) is equal to
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