.. _AQweek7:

Week 7 Attendance Quiz Hints
-----------------------------

**AQ06_1:**

#. See :ref:`dotProduct`, Use either the ``dot`` function or an inner
   product, ``u'*v``.

#. See :ref:`vectLength`. The ``norm`` function is easiest way to find the
   length of vector.

#. Same as above.

#. See :ref:`vectAngle`. Equation 6.5 shows the relationship between
   the dot product, cosine of the angle, and length of the two vectors.


**AQ06_2:**

#. See identity matrix in :ref:`special`.

#. See :ref:`matMultProp`.

#. See matrix inverse in :ref:`special`.
      
**AQ03_4:**

#. See the example under :ref:`systemEQ`.

#. See :ref:`mat-left-divide`

#. See :ref:`gaussElim`.

#. See :ref:`invertTest`.

#. See :ref:`invertTest`.

#. See :ref:`invertTest`.

#. See :ref:`invertTest`.