1.

If e^(lx)=cosx+isinx and x+iy=|(1,e^(pi i//4),e^(pi i//3)),(e^(-pi i//4),1,e^(2pi i//3)),(e^(-pi i//3),e^(-2pi i//3),e^(-2pi i //3))|, then

Answer»

`x=-1,y=sqrt(2)`
`x=1,y=-sqrt(2)`
`x=-sqrt(2),y=sqrt(2)`
NONE of these

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