A) \[(-2,\,\,-1)\]or\[(2,\,\,-1)\]
B) \[(-1,\,\,2)\]or\[(-2,\,\,1)\]
C) \[(1,\,\,2)\]or\[(-1,\,\,-2)\]
D) None of these
Correct Answer: A
Solution :
Given, \[3+i{{x}^{2}}y\] and \[{{x}^{2}}+y+4i\] are conjugate. \[\therefore \] \[3-i{{x}^{2}}y={{x}^{2}}+y+4i\] \[\Rightarrow \] \[{{x}^{2}}+y=3\]and\[{{x}^{2}}y=-4\] \[\Rightarrow \] \[x=\pm 2,\,\,y=-1\] \[\therefore \] \[(x,\,\,y)=(2,\,\,-1)\]or\[(-2,\,\,-1)\]You need to login to perform this action.
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