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Let f(x)={((tan^(2){x})/(x^(2)-[x]^(2)),...

Let `f(x)={((tan^(2){x})/(x^(2)-[x]^(2)),"for"xgt0),(1/(sqrt({x}cot{x})),"for"xlt0):}` where `[x]` is the step up function and `{x}` is the fractional part function of x then

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