If `f(x)+f(y)+f(xy)=2+f(x)f(y)` for all `x, y in R` and `f(x)` is a polynomial function with `f(4)=65` then find the value of `(f(5))/(7)` is (where f(1)`ne`1) .

" If "f(x)+f(y)+f(xy)=2+f(x)f(y)for all x,y in R" and "f(x)" is a polynomial function with "f(1)=2,f(4)=17" then the value of "f(5)" equals :- "

If (x).f(y)=f(x)+f(y)+f(xy)-2AA x,y in R and if f(x) is not a constant function,the value of f(1) is equal to

If f((x)/(y))=(f(x))/(f(y)) for all x, y in R, y ne 0 and f'(x) exists for all x, f(2) = 4. Then, f(5) 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(x) is a differentiable function on x in R , such that f(x+y)=f(x)f(y) for all x, y in R where f(0) ne 0 . If f(5)=10, f'(0)=0 , then the value of f'(5) is equal to

If f is a function satisfying f(x+y)=f(x)xx f(y) for all x,y in N such that f(1)=3 and sum_(x=1)^(n)f(x)=120 find the value of n

If (x+f(y))=f(x)+y AA x,y in R and f(0)=1 then find the value of f(7).