CS 107

1
CS 107

• Recitation 1
• Lu Han

2
General

• Lu Han
• luhan_at_cs.rutgers.edu
• Class webpage
• Old class webpage http//remus.rutgers.edu/cs107/
  
• Recitation http//rci.rutgers.edu/luhan/cs107.ht
  ml
• Remote MATLAB using Cygwin http//remus.rutgers.e
  du/cs107/cygwin/remote_matlab.htm
• Office Hour
• Core 333
• Thursday 4-5? Or 5-6?

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Recitation

• Lecture Hour
• T, Th, 640 PM 800 PM
• Recitation Hour
• Section 1 Tuesdays recitation 825-920 PM
• Section 2 Thursdays recitation 825-920 PM

4
Homework and Projects

• Homework
• Should be submitted using Sakai system
  http//sakai.rutgers.edu/
• Projects

5
Course policies

• Grading
• Homework 10
• Midterm 1 25
• Midterm 2 25
• Final 40
• Option 1
• HW/Projects 40
• Midterm1 15
• Midterm215
• Final30
• Option 2
• HW/Projects 50
• Midterm1 15
• Midterm215
• Final20

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What we will do in the recitation

• Review of material that was covered during the
  lectures
• Practice Problems
• To prepare you for approaching assignments and
  tests
• Discuss the Homework
• Review homework and midterms
• Some of the solutions will be given and discussed
  during recitations
• Answering your questions.

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Material Covered

• Basic, but essential elements in Matlab
• Operations
• , -, , /.
• Variables
• Assignments
• Instructions
• M-files
• Functions

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Variables and assignment

• Variable
• is a way to store a value (or values) in a
  program, and gives the value a name.
• a place in the computer to store a piece of data
• Naming a variable (rules)
• Start with a letter
• Continue with any combination of letters, numbers
  and _ (underscore)
• Names are case-sensitive! (Result can hold a
  different value than result)
• Try to give it a meaning
• Assignment statements
• nine 9
• My_name Lu
• e8een nine 2

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An example

• The difference between math assignment and MATLAB
  (computer language) assignment
• a a 1

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Functions

• When we want a set of operations to run as a
  black box and return some results.
• Function
• First line is
• function output_parameter_list
  function_name(input_parameter_list)
• Create an M-file with the same name as the
  function you wish to create (e.g.edit
  my_function).
• Save the file as filename.m
• Call the function with the right parameters.

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MATLAB/programming Things

• MATALB programming essentials can be applied to
  any programming language.
• Can be graphical (ex. plot())
• Easier to understand the material
• Easier to explain material to others
• How to get usage information?
• gtgt help, gtgthelp plot
• Cleaning up variables
• Clear
• Quit MATLAB
• gtgtquit, gtgtexit

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Exercises

• Ex 1 Write a function that takes two numbers as
  arguments and returns their sum up.
• Returns number1 number 2
• Ex 2 Write a function that takes three numbers
  as arguments and returns their sum up, but you
  have to use the function in ex 1.
• Ex 3 Write a function to display Hello World

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Thank you!

• Any questions?