`|(3,-3i,x),(4,y,i),(0,2i,-i)|=18+11i` is true of (A) `x=1,y=2` (B) `x=1,y=-1` (C) `x=-1,y=1` (D) `x=0,y=3`

Find (x+y)-:(x-y), if (i) x=2/3, y=3/2 (ii) x=2/5, y=1/2 (iii) x=5/4, y=(-1)/3

If |[6i,-3i,1],[ 4, 3i,-1],[ 20, 3,i]|=x+i y , then a. x=3,y=1 b. x=1,y=3 c. x=0,y=3 d. x=0,y=0

If det|6i -3i 1 4 3i-1 20 3 i|=x+i y , then a. x=3,y=1 b. x=1,y=3 c. x=0,y=3 d. x=0,y=0

If (x^2+x)+i ya n d(-x-1)-i(x+2y) are conjugate of each other, then real value of x&y are x=-1,y=1 b. x=1,y=-1 c. x=1,y=1 d. x=-1,y=-1

The real values of xa n dy for which the following equation is satisfied: ((1+i)(x-2i))/(3+i)+((2-3i)(y+i))/(3-i)=i x=3,y=1 b. x=3, y=-1 c. x=-3,y=1 d. x=-3,y=-1

The complex numbrs x and y such that x,x+2y,2x+y are n A.P. and (y+1)^2, xy+5, (x+1)^2 are in G.P. are (A) x=3, y=1 (B) x=-1+2sqrt(2)i, y=1/3 (-1+2sqrt(2)i) (C) x=sqrt(2)+i, y=3sqrt(5)-sqrt(2)i (D) x=-1(1+2sqrt(2)i), y= - 1/3 (1+2sqrt(2)i)

If (1-i)x+(1+i)y=1-3i , then (x,y) is equal to (a) (2,-1) (b) (-2,1) (c) (-2,-1) (d) (2,1)

If A=1/3[(1,2,2),(2,1,-2),(x,2,y)] satisfies A^T A=I , then x+y= (a) 3 (b) 0 (c) -3 (d) 1

If 3A=[(-1,-2,-2),(2,1,-2),(x,-2,y)] such that A A^T=I , then which of the following are correct? (A) x+2y=4 (B) x-y=1 (C) x^2+y^2=-3 (D) x^2+y^2=5

x+iy=|[6i,-3i,1],[4,3i,-1],[20,3,i]| , find x and y.