Matrices & Arrays

• All variables in MATLAB are treated as matrices.
• Matrices can be entered directly or can be generated by other functions.

  >>help zeros
  >>help ones
  >>help tan
  

  

  
• IMPORTANT: For any square matrix x (as the matrix A above), compare the difference between the results of
  $y=1+x-x.^2/4$
  and
  $y=1+x-x^2/4$
  by modifying your previous fun.m.
• Array Operations.