Question: Using the approach described in section 6.8.1 on page 127, show that for a spin described by the wavefunction the matrix representation of the density

Using the approach described in section 6.8.1 on page 127, show that for a spin described by the wavefunction
W) = c, la) + cgB).

the matrix representation of the density operator is given by

Using the approach described in section 6.8.1 on page 127,

W) = c, la) + cgB).

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