1.3.5. Week 7 Attendance Quiz Hints

AQ06_1:

  1. See Dot Product or Inner Product, Use either the dot function or an inner product, u'*v.

  2. See Length of Vectors. The norm function is easiest way to find the length of vector.

  3. Same as above.

  4. See Angle Between Vectors. Equation 6.5 shows the relationship between the dot product, cosine of the angle, and length of the two vectors.

AQ06_2:

  1. See identity matrix in Special Matrices.

  2. See Matrix Multiplication Properties.

  3. See matrix inverse in Special Matrices.

AQ03_4:

  1. See the example under Systems of Linear Equations.

  2. See Jumping Ahead to MATLAB

  3. See Gaussian Elimination.

  4. See Invertible Test.

  5. See Invertible Test.

  6. See Invertible Test.

  7. See Invertible Test.