Question

If function f satisfies the equation 3f(x) +2f((x + 59)/(x - 1)) = 10x + 30, x ≠ 1 then f(7) =........ 

(a) 8 

(b) 4 

(c) -8 

(d) 11
 

 

Answer 1

The correct option (b) 4

Explanation:

Here 3f(x) + 2f((x + 59)/(x + 1)) = 10x + 30 ....... (1)

Now put x = 7 and x = 11 we get two equation and solved them we get f(7) = 4