The function `f(x)=tanx` is discontinuous on the set `{npi; n in Z}` (b) `{2npin in Z}` `{(2n+1)pi/2: n in Z}` (d) `{(npi)/2: n in Z}`

The function f(x)=tan x is discontinuous on the set {n pi;n in Z}{(2n+1)(pi)/(2):n in Z}(d){(n pi)/(2):n in Z}

The value(s) of theta , which satisfy 3-2\ costheta-4sintheta-cos2theta+sin2theta=0 is/are theta=2npi; n in I (b) 2npi+pi/2; n in I 2npi-pi/2; n in I (d) npi: n in I

The function f(x)=|cos x| is differentiable at x=(2n+1)pi/2,n in Z(b) continuous but not differentiable at x=(2n+1)pi/2,n in Z(c) neither differentiable nor continuous at x=n pi,n in Z(d) none of these

The product of matrices A=[[cos^2theta,costheta],[sinthetacostheta,sinthetasin^2theta]] and B=[[cos^2phicosphi,sinphicosphi],[sinphi,sin^2phi]] is a null matrix if theta-phi= (A) 2npi,n in Z (B) (npi)/2, n in Z (C) (2n+1)pi/2, n in Z (D) npi, n in Z

If tan A = 1, tan B = 2, tan C = 3, then A+B+C = (i) (n pi)/(2); n in Z (ii) (n pi); n in Z ( iii) (n pi)/(4); n in Z (iv) (2n pi)/(3); n in Z

The domain of f (x) = sqrt (log ((1)/(| sin x |))) is (i) (-oo, oo) (ii) R-{(n pi)/(2): n in Z} (iii) R-{(n pi): n in Z} (iv) R-{(n pi)+(-1)^(n) ((pi)/(2)): n in Z }

The function f(x)=|cos sx| is everywhere continuous and differentiable everywhere continuous but not differentiable at (2n+1)(pi)/(2),n in Z .neither continuous not differentiable at (2x+1)(pi)/(2),n in Z

Let tan x-tan^(2)x>0 and |2sin x| n pi,n in Z(b)x>n pi-(pi)/(6),n in Zx

The function f(x)=|cos x| is (a) everywhere continuous and differentiable (b) everywhere continuous but not differentiable at (2n+1)pi/2,n in Z(c) neither continuous nor differentiable at (2n+1)pi/2,n in Z(d) none of these

Which of the following is not the general solution of 2^(cos2x)+1=3. 2^-sin^(2x)? (a)npi,n in Z (b) (n+1/2)pi,n in Z (n-1/2)pi,n in Z (d) none of these