Let X be the set of all positive such that `f(x+y) = f(xy)` for all `x ge 4, y ge 4`. If `f(8)= 9`, then f(9) is equal to.

Let f be a funcation defined on the set of all positive integers such that f (x) +f(y) for all postive integers x,y,if f (12) =24 and f(8) =15 the value of f(48) is

Let f be a function such that f(xy)=(f(x))/y for all positive real numbers x, y. If f(20) = 15, then f(50) =

A function f:RtoR is such that f(x+y)=f(x).f(y) for all x.y inR and f(x)ne0 for all x inR . If f'(0)=2 then f'(x) is equal to

Let f be a non zero continuous function satisfying f(x+y)=f(x) f(y) for all x, y in R . If f(2)=9 then f(3) is

Let f:R to R such that f(x+y)+f(x-y)=2f(x)f(y) for all x,y in R . Then,

Let f:R to R such that f(x+y)+f(x-y)=2f(x)f(y) for all x,y in R . Then,

Let f be a function such that f(xy)=(f(x))/(y) for all positive real numbers x,y .If f(20)=15, then f(50)=

Let f be a non-zero continuous function satisfying f(x+y)=f(x)f(y) for all , x,y in R . If f(2)=9 then f(3) is