If a function f is defined by f(x)= (1-x)/x for all non zero numbers x. If f(a) = 1 and f(a/b) = 3 then b= ?  Options
A) 3	B) 1/3	C) 2	D) 1/2	E) -2
Given that f(x)= (1-x)/x and f(a) = 1, then f(a) =(1-a)/a=1 ===&gt; a=1/2, then backsolve using the answer choices:   f(a/b) = f(1/2b) = 3   A) 3 ===&gt; f(1/2*3) = f(1/6) = 5   B) 1/3 ===&gt; f((1/2)/(1/3)) = f(3/2) = (-1/2)/(3/2) = -1/3   2) 2 ===&gt; f(1/2*2) = f(1/4) =3 WINS   D) 1/2 ===&gt; f((1/2)/(1/2)) = f(1) = 0   E) -2 ===&gt; f((1/2)/-2) = f(-1/4) = (5/4)/(-1/4) = -5   Answer: 2
<result>C</result>
If a function f is defined by f(x)= (1-x)/x for all non zero numbers x. If f(a) = 1 and f(a/b) = 3 then b= ?