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Means - A.M/G.M/H.M
Question
The minimum value of the expression
3
x
+
3
1
−
x
,
x
∈
R
is:
Moderate
A
0
B
1
3
C
3
D
2
3
Solution
A.
M
≥
G.M
3
x
+
3
1
−
x
2
≥
3
x
⋅
3
1
−
x
3
x
+
3
1
−
x
≥
2
3
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