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Byju's Answer
Standard XII
Mathematics
Binary Operation
A function ...
Question
A function
f
:
(
−
3
,
7
)
→
R
is defined as follows:
f
(
x
)
=
⎧
⎪
⎨
⎪
⎩
4
x
2
−
1
;
−
3
≤
x
<
2
3
x
−
2
;
2
≤
x
≤
4
2
x
−
3
;
4
<
x
≤
6
Find:
f
(
5
)
+
f
(
6
)
Open in App
Solution
Given,
f
(
x
)
=
⎧
⎪
⎨
⎪
⎩
4
x
2
−
1
;
−
3
≤
x
<
2
3
x
−
2
;
2
≤
x
≤
4
2
x
−
3
;
4
<
x
≤
6
Then,
f
(
5
)
=
2
x
−
3
=
2
(
5
)
−
3
=
10
−
3
=
7
and
f
(
6
)
=
2
(
6
)
−
3
=
12
−
3
=
9
Therefore,
f
(
5
)
+
f
(
6
)
=
7
+
9
=
16
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0
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x
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1
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7
≤
x
<
−
5
x
+
5
;
−
5
≤
x
≤
2
x
−
1
;
2
<
x
<
6
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a
)
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(
−
7
)
−
f
(
−
3
)
(
b
)
4
f
(
−
3
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A function
f
:
[
−
7
,
6
)
→
R
is defined as follows
f
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x
)
=
⎧
⎪
⎨
⎪
⎩
x
2
+
2
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;
−
7
≤
x
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x
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5
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≤
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<
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(iii)
2
f
(
−
4
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(ii)
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4
f
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−
3
)
+
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f
(
4
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f
(
−
6
)
−
3
f
(
1
)
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