Let's denote the basis vectors of € as $C_1 = (c_{11}, c_{12})$ and $C_2 = (c_{21}, c_{22})$. We want to find the scalars $x_1, x_2, y_1, y_2$ such that:
$C_1 = x_1(1,0) + x_2(b, z)$
$C_2 = y_1(1,0) + y_2(b, z)$
From the first equation, we have $c_{11} = x_1 +
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