The function f satisfies
f(√x+1)=1x
for all x≠0. Find f(2).
f ( √ [ x + 1) ) = 1 / x
f(2) implies that
2 = √ [x + 1 ] square both sides
4 = x + 1 subtract 1 from both sides
3 = x
So
f(2) = 1 / 3
Thank you CPhill!
