The number of point(s) of discontinuity of function f(x)=[6xπ]cos[3x� – InterviewSolution

1.	The number of point(s) of discontinuity of function f(x)=[6xπ]cos[3xπ] in the interval (π10,11π10) is(where [.] is greatest integer function)
Answer» The number of point(s) of discontinuity of function $f (x) = [\frac{6 x}{π}] cos [\frac{3 x}{π}]$ in the interval $(\frac{π}{10}, \frac{11 π}{10})$ is (where [.] is greatest integer function)

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