Q.) Which of the following functions is an odd function?
c)Both (a) and (b)
(d) Neither (a) nor (b)
For any function to be an Odd Function , It must satisfy the following condition
f(X) = -f(-X)
f(-X) = = = f(X)
So, Option(a) is not Odd Function
f(-X) = = = which is not equal to f(-X).
So, Option(b) is also not Odd Function.
Hence , Option(d) i.e. Neither (a) not (b) is Odd Function.