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Function f(x)=sin(lnx)-"cos"(lnx) is (...

Function `f(x)=sin(lnx)-"cos"(lnx)` is (a)M.I. in `[e^(2npipi/4),e^(2npi+(3pi)/4)]` (b)M.D. In `[e^(2npi+(3pi)/4),e^(2npi+(7pi)/4)]` (c)M.D. in `[e^(2npi(5pi)/4),e^(2npipi/4)]` (d)M.I. in `[e^(2npi+(3pi)/4),e^(2npi+(7pi)/4)]`

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