(x) =0 if x=0 and I(x) =1 if x=0. I(x) is called. A. Unity function B. Union function C. Unit step function D. Constant function View AnswerC. Unit step function Related MCQs A function of bounded variation is necessarily. A bounded monotonic function is a function of bounded variation. How many types of integral. Every continuous function is Riemann integrable. An interval has partitions. Norm is defined as thelength of subinterval. The least upper bound of [0, 1]. If total variation of f is finite then f is called. In fundamental theorem of calculus F on[a,b]. In fundamental theorem of calculus F’=.