[" If "((1+i)/(1-i))^(x)=1" then "],[[" (a) "x=2n,n in I^(+)quad " (b) "x=4n+1,n in I^(+)],[" (c) "x=2n+1,n in I^(+)],[" (d) "x=4n,n in I^(+)]]

If ((1 +i)/(1 -i))^(x) =1 , then (A) x=2n+1 (B) x=4n (C) x=2n (D) x=4n+1, n in N.

If ((1 +i)/(1 -i))^(x) =1 , then (A) x=2n+1 (B) x=4n (C) x=2n (D) x=4n+1, n in N.

If ((1+i)/(1-i))^(x)=1 AA n in N is (i) x = 2n+1 (ii) x =4n (iii) x=2n (iv) x=4n+1

If cos^2x+cos^2 2x+cos^2 3x=1 then (a) x=(2n+1)pi/4,\ n in I (b) x=(2n+1)pi/2,\ n in I (c) x=npi+-\ pi/6,\ n in I (d) none of these

If n in N and I_(n) = int (log x)^(n) dx , then I_(n) + n I_(n - 1) =

The general solution of the equation tanx +sin(pi+x)=2sin^(2)((x)/(2)) is/are (A) n pi,n in I (B) 2n pi,n in I(C)(4n+1)(pi)/(4),n in I(D)n pi+(pi)/(3),n in I

If I_(n)=int_(1)^(e)(log x)^(n) d x, then I_(n)+nI_(n-1) equal to

If n(ne 1) in N and I_(n) = int tan^(n) x dx then I_(n)+I_(n-2) =

If I_(n) = int_0^(pi/4) tan^(n)x dx , then n(I_(n-1)+I_(n+1)) =