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=====Homework for Matrix Components =====

  - (MatrixElements) \textit{This practice exercise helps students understand that they can ``pick out'' a particular component of a matrix by taking the braket of the matrix with appropriate basis vectors.  The ``bra'' vector picks out the row and the ``ket'' vector picks out the column.  Part $( c)$ requires Dirac bra-ket notation.}
    - {{page>homework:prefacequestions:matrixelementsa}}
    - {{page>homework:prefacequestions:matrixelementsb}}
    - {{page>homework:prefacequestions:matrixelementsc}}

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