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If y=3^(x-1)+3^(-x-1) (where, x is real...

If `y=3^(x-1)+3^(-x-1)` (where, x is real), then the leastvalue of y is

A

2

B

6

C

`(2)/(3)`

D

None of these

Text Solution

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The correct Answer is:
C
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DISHA PUBLICATION-SEQUENCES AND SERIES -Exercise -2 : Concept Applicator
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