Question

What’s the answer??(SOMEONE PLEASE HELP ME)

Answer 1

We know that :

If f(x) and g(x) are Two Functions Defined under same Domain, then Composite Function : (f o g)(x) = f(g(x))

Given : f(x) =
`(2)/(x + 3)` and g(x) =
`(1)/(2x)`

⇒ (f o g)(x) = f(g(x))

⇒
`(f\;o\;g)(x) = f((1)/(2x))`

⇒
`(f\;o\;g)(x) = (2)/((1)/(2x) + 3) = (4x)/(1 + 6x)`

1st Option is the Answer