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Byju's Answer
Standard XII
Mathematics
Definition of Function
If f x = 3x...
Question
If
f
(
x
)
=
3
x
−
2
and
g
(
x
)
=
x
+
1
2
, then
g
o
f
(
3
)
=
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Solution
We have,
f
(
x
)
=
3
x
−
2
and
g
(
x
)
=
x
+
1
2
Since,
g
o
f
(
x
)
=
(
3
x
−
2
)
+
1
2
=
3
x
−
1
2
g
o
f
(
3
)
=
3
(
2
)
−
1
2
=
5
2
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0
Similar questions
Q.
If
f
(
x
)
=
x
+
1
and
g
(
x
)
=
x
2
Find
F
o
g
(
1
)
G
o
f
(
−
1
)
F
o
g
(
2
)
G
o
f
(
3
)
Q.
If the functions
f
(
x
)
and
g
(
x
)
are defined by
f
(
x
)
=
5
x
+
2
;
g
(
x
)
=
x
−
2
3
then find the value of
g
o
f
(
3
)
.
Q.
If
f
(
x
)
=
3
x
+
1
,
g
(
x
)
=
x
3
+
2
,
then
f
+
g
f
g
(
0
)
=
Q.
If
f
(
x
)
=
ln
1
+
x
1
−
x
and
g
(
x
)
=
3
x
+
x
3
1
+
3
x
2
, then
f
[
g
(
x
)
]
equals.
Q.
Let
f
:
N
→
R
such that
f
(
x
)
=
2
x
−
1
2
and
g
:
Q
→
R
such that
g
(
x
)
=
x
+
2
be two function. Then
(
g
o
f
)
(
3
2
)
is equal to
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Definition of Function
Standard XII Mathematics
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