Question

if f(x) = x-1/x+1 , find fof​

Answer 1

Step-by-step explanation:

f(x) = x-1/x+1 then,

fof will be:

f(x-1/x+1) = {(x-1)/(x+1)-1/(x-1/x+1)+1

={ {x-1-(x+1)}/(x+1)}/(x-1)+(x+1)/x+1

= (-2/x+1)/(2x/x+1)

=-2/2x

=-1/x