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UPSC NDA I 2011 Mathematics Paper
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© examsnet.com
Question : 3
Total: 120
The largest value of
2
x
3
−
3
x
2
−
12
x
+
5
for
−
2
≤
x
≤
2
occurs when
x
=
−
2
x
=
−
1
x
=
2
x
=
0
Validate
Solution:
Clearly when we put
x
=
−
1
the value of the given polynomial is maximum.
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