Question

If f(x)=5/(x²+1) and g(x)=3x, then g(f(2))=

Answer 1

g(f(2)) = 3

Explanation:

to find g(f(2)), evaluate f(2) , then substitute the value obtained into g(x)

f(2) =
`(5)/(2^2+1)` =
`(5)/(4+1)` =
`(5)/(5)` = 1

now evaluate g(1)

g(1) = 3(1) = 3

so g(f(2)) = 3