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If vec ar=xr hat i+yr hat j+zr hat k , ...

If ` vec a_r=x_r hat i+y_r hat j+z_r hat k` , where `r=1,2,3` are three mutually perpendicular unit vectors, then possible values of the determinant `|x_1x_2x_3y_1y_2y_3z_1z_2z_3|a r e`

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