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e^(5x)+e^(-5x)=...

`e^(5x)+e^(-5x)=`

A

`1 +(5x)/(1!) +(5x)^2/(2!) + ......`

B

`1 - (5x)/(1!) + ((5x)^2)/(2!) - ((5x)^3)/(3!) + ......`

C

`1 + ((5x)^2)/(2!) + (5x)^4/(3!) + .......`

D

`2(1 + ((5x)^2)/(2!) + (5x)^4/(4!) + .......)`

Text Solution

Verified by Experts

The correct Answer is:
D
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