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)]`

The domain of the function f(x)=x/(sqrt(sin(lnx)-cos(lnx))),(n in Z) is (a) (e^(2npi),e^((3n+1/2)pi)) (b) (e^((2n+1/4)pi),e^((2n+5/4)pi)) (c) (e^((2n+1/4)pi),e^((2n-3/4)pi)) (d) none of these

The domain of the function f(x)=x/(sqrt(sin(lnx)-cos(lnx))),(n in Z) is (a) (e^(2npi),e^((3n+1/2)pi)) (b) (e^((2n+1/4)pi),e^((2n+5/4)pi)) (e^((2n+1/4)pi),e^((2n-3/4)pi)) (d) none of these

The domain of the function f(x)=x/(sqrt(sin(lnx)-cos(lnx))),(n in Z) is (a) (e^(2npi),e^((3n+1/2)pi)) (b) (e^((2n+1/4)pi),e^((2n+5/4)pi)) (e^((2n+1/4)pi),e^((2n-3/4)pi)) (d) none of these

The expression cos3theta+sin3theta+(2sin2theta-3)(sintheta-costheta) is positive for all theta in (a) (2npi-(3pi)/4,2npi+pi/4),n in Z (b) (2npi-pi/4,2npi+pi/6),n in Z (c) (2npi-pi/3,2npi+pi/3),n in Z (d) (2npi-pi/4,2npi+(3pi)/4),n in Z

The expression cos3theta+sin3theta+(2sin2theta-3)(sintheta-costheta) is positive for all theta in (a) (2npi-(3pi)/4,2npi+pi/4),n in Z (b) (2npi-pi/4,2npi+pi/6),n in Z (c) (2npi-pi/3,2npi+pi/3),n in Z (d) (2npi-pi/4,2npi+(3pi)/4),n in Z

The expression cos3theta+sin3theta+(2sin2theta-3)(sintheta-costheta) is positive for all theta in (2npi-(3pi)/4,2npi+pi/4),n in Z (2npi-pi/4,2npi+pi/6),n in Z (2npi-pi/3,2npi+pi/3),n in Z (2npi-pi/4,2npi+(3pi)/4),n in Z

General solution for |sinx|=cosx is (a) 2npi+pi/4,\ n in I (b) 2npi+-pi/4, n in 1 (c) npi+pi/4,\ n in 1 (d) none of these

The value of x satisfying the equation cos(lnx)=0, is (A) e^(pi//2) (B) e^(-(2009)pi//2) (C) e^(1000pi) (D) e^(-3pi//2)

If e^(i theta)=cos theta+i sin theta, find the value of |1e^(i pi/3)e^(i pi/4)e^(-i pi/3)1e^(i2 pi/3)e^(-i pi/4)e^(-i2 pi/3)1|