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Byju's Answer
Standard XII
Mathematics
Derivative of Standard Functions
Find f5 if ...
Question
Find
f
(
5
)
if
f
(
x
)
=
x
2
+
3
x
+
2
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Solution
f
(
x
)
=
x
2
+
3
x
+
2
f
(
5
)
=
5
2
+
3
(
5
)
+
2
f
(
5
)
=
25
+
15
+
2
=
42
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