FunctionHard
Question
If f : R → R satisfies f(x + y) = f(x) + f(y), for all x, y ∈ R and f(1) = 7. then 
f(r) is -
f(r) is -Options
A.
B.
C.7n(n + 1)
D.
More Function Questions
Let f = x2 + (x ≠ 0), then f(x) equals-...The value of b and c for which the identity f ( x + 1) - f (x) = 8x + 3 is satisfied, where f(x) = bx2 + cx + d, are -...If [2 cos x] + [sin x] = - 3, then the range of the function, f(x) = sin x + √3 cos x in [0, 2 π] is: (where ...The graph of the function y = f(x) is symmetrical about the line x = 2, then...The domain of the function log2 log3 log4 (x) is -...