Q 1 a Let f be a real function satisfying the following properties Df R f 0 0 f 0 0 f x 0 for all x D 0 f is left continuous at x 1 f is not continuous at x 1 and lim f x 0 Try to define such a function f x 1 and skecth a draft graph for f hint you may use the well known real functions to write a piecewise function f satisfying these properties