(Solution Download) If x R we define x to be the


If x ? R, we define [[x]] to be the greatest integer n ? Z such that n < x. (Thus, for example, [[8:3]] = 8; [[?]] = 3; [[- ?]] = -4.) The function x ? [[x]] is called the greatest integer function. Determine the points of continuity of the following functions:
(a) f(x) := [[x]],
(b) g(x) := x [[x]],
(c) h(x) := [[sin x]].
(d) k(x) := [[1/x]] (x ? 0).

 







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