If for non-zero x,, where a ≠ b, then find f(x).
Given x ≠ 0 and a ≠ b such that
..... (1)
Substituting in place of x, we get
.....-- (2)
On adding equations (1) and (2), we get
..... (3)
On subtracting equations (1) and (2), we get
..... (4)
On adding equations (3) and (4), we get
Thus,