Which one of the following functions is not continuous on `(0,pi)`?

Which of the following functions is not continuous AAx in R ?

Which of the following functions is not continuous AAx in R ?

Which of the following function is not continuous at x = 0?

Which of the following functions is continuous at x = 0 ?

Which of the following function is continuous at x = 0 ?

The following functions are continuous on (0,pi)(a)tan x

Which of the following functions is not decreasing on (0,pi//2)?

Which one of the following functions is continuous everywhere in its domain but has atleast one point where it is not differentiable