`(1+2i+3i^2)/(1-2i+3i^2)` equals a. `i` b. -1 c. `-i` d. 4

(1+2i+3i^(2))/(1-2i+3i^(2)) equals i b.-i c.-1 d.4

(1+2i)/(1+3i) is equal to

(1+2i)/(1+3i) is equal to

If A , B ,C are angles of a triangles, then the value of e^(2i A)e^(-i C)e^(-i B)e^(-i C)e^(2i B)e^(-i A)e^(-i B)e^(-i A)e^(2i C) is a. 1 b. -1 c. -2 d. -4

1+i+i^(2)+i^(3) is equal to

1+i+i^(2)+i^(3) is equal to

The value of (1+i)(1+i^2)(1+i^3)(1+i^4) is a. 2 b. 0 c. 1 d. i

If A = 1/ sqrt(3) [[1,1+i],[1-i,1]] then A(bar(A)^T) equals : a. O b. I c. -I d. 2I

If i^2=-1, then the sum i+i^2+i^3+... upto 1000 terms is equal to a. 1 b. -1 c. i d. 0

The value of (1+i)(1+i^(2))(1+i^(3))(1+i^(4)) is a.2 b.0 c.1 d.i