EGR 103/Lecture03

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The following is a list of the commands from the help sections covered in Lecture 3 that are required knowledge for EGR 103 students.

help elmat

  • Elementary matrices
    • now: zeros, ones, eye, linspace, logspace, :
    • later in the course: meshgrid
  • Basic array information
    • now: size, length, numel
    • later: disp
  • Matrix manipulation
    • now: :, end
    • later: reshape, find
  • Special variables and constants
    • now: pi, i, inf, nan, j, why
    • later: eps, realmax, realmin

help elfun

  • Trigonometric
    • now: all -- note ending "d" for some to use degrees versus default of radians
  • Exponential
    • now: exp, log, log10, sqrt
  • Complex
    • now: abs
    • later: angle, conj, imag, real
  • Rounding and remainder
    • now: all

help randfun

  • Random matrices
    • now: rand, randi, randn

help general

  • General information
    • now: logo, membrance, bench
  • Managing the workspace
    • now: who, whos, clear, quit, exit
    • later: load, save
  • Controlling the command window
    • now: format
    • later: echo, diary

help datafun

  • Basic operations
    • now: max, min, mean, median, mode, sort, sortrows, sum
    • later: std, var, hist, trapz, cumsum, cumtrapz

help ops

  • Arithmetic operators
    • now: + - * .* / ./ ^ .^
    • later: \ .\
  • Relational operators
    • later: all
  • Logical operators
    • later: all
  • Special characters:
    • now: : [] % ' , ;
    • later: @