a function f is defined for all real numbers and has the following three properties?
Question: A Function F Is Defined For All Real Numbers And Has The Following Three Properties. (i) F(1) = 5 (ii) F(3) = 21, And (iii) For All Real Values Of A And B, F(a + B) - F(a) = Kab + 2b^2 Where K Is A Fixed Real Number Independent Of A And B.