The function f(x) = +° + 3x is increasing in interval

Class 12th Mathematics, Question Paper 2023: The function f(x) = +° + 3x is increasing in interval

These are the options for the Question: The function f(x) = +° + 3x is increasing in interval

(a) (-00, 0)
(b) (0, co)
(c) R
(d) (0, 1)