Question

The Function f is defined by f(x)=2x+3/x+2
find f(n+3)

Answer 1

(2n+9)/( n+5)

Explanation:

f(x)=(2x+3)/(x+2)

Let x = n+3

f(n+3)=(2*(n+3)+3)/(n+3+2)

= (2n+6+3)/(n+5)

= (2n+9)/( n+5)