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If f(x) = 1/2 (3^x + 3^(-x)), g(x) = 1/2...

If `f(x) = 1/2 (3^x + 3^(-x)), g(x) = 1/2 (3^x - 3^(-x))`, then `f(x) \ g(y)+f(y) \ g(x)=`

A

f (x+y)

B

g(x+y)

C

2f (x)

D

2g (x)

Text Solution

Verified by Experts

The correct Answer is:
B
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