jvdegroot wrote:
For which of the following functions is F(a + b) = F(a) + F(b) for all positive number a and b?
A) F(x) = x^2
B) F(x) = X + 1
C) F(x) = \sqrt{x}
D) F(x) = 2/x
E) F(x) = -3x
Official answer known. However, I do net get it, could someone explain?
Difficulty level unknown, some an idea?
Merging similar questions. Please refer to the solutions above.
