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1+3^2/(2!)+3^4/(4!)+3^6/(6!)+......oo is...

`1+3^2/(2!)+3^4/(4!)+3^6/(6!)+......oo` is equal to

A

`1/2(e^3-e^-3)`

B

`1/2(e^3+e^-3)`

C

`e^3`

D

`e^-3`

Text Solution

Verified by Experts

The correct Answer is:
B
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