1. August 22, 2005 Lecture 1 - By P. Lin 1 CPET 190 Lecture 1 Problem Solving with MATLAB http://www.etcs.ipfw.edu/~lin

2. August 22, 2005 Lecture 1 - By P. Lin 2 Lecture 1: Introduction Introduction – Objectives of the Course Introduction – Objectives of the Course Course Syllabus and Class ObjectivesCourse Syllabus and Class Objectives Problem Solving Problem Solving What is a Problem & Problem SolvingWhat is a Problem & Problem Solving Why Teach Problem SolvingWhy Teach Problem Solving Types of ProblemsTypes of Problems Collaborative, Team-Based Problem SolvingCollaborative, Team-Based Problem Solving Problem Solving with a Computer Problem Solving with a Computer Define the problemDefine the problem Formulate a mathematical modelFormulate a mathematical model Develop an algorithmDevelop an algorithm Write the codes for the problemWrite the codes for the problem Test program and verify the solutionTest program and verify the solution Document the program and solutionDocument the program and solution

3. August 22, 2005 Lecture 1 - By P. Lin 3 Lecture 1: Introduction (continue) Introduction to MATLAB Introduction to MATLAB What is MATLABWhat is MATLAB The Advantages of MATLABThe Advantages of MATLAB Disadvantages of MATLABDisadvantages of MATLAB The MATLAB EnvironmentThe MATLAB Environment A Sample MATLAB SessionA Sample MATLAB Session Example 1: Calculate I = watt/voltExample 1: Calculate I = watt/volt Example 2: Calculate the area of a circle with a radius of 0.001 inch (π r2).Example 2: Calculate the area of a circle with a radius of 0.001 inch (π r2). Example 3: Sum of 12 numbers with continue statement on successive lines by typing an ellipsis (…) at the end of the first lineExample 3: Sum of 12 numbers with continue statement on successive lines by typing an ellipsis (…) at the end of the first line

4. August 22, 2005 Lecture 1 - By P. Lin 4 Syllabus WebCT: http://webct.ipfw.edu/ WebCT: http://webct.ipfw.edu/http://webct.ipfw.edu/ Web Site: http://www.etcs.ipfw.edu/~lin Web Site: http://www.etcs.ipfw.edu/~lin http://www.etcs.ipfw.edu/~lin Email: lin@ipfw.edu Email: lin@ipfw.eduin@ipfw.edu Test Date Test Date Grading Grading

5. August 22, 2005 Lecture 1 - By P. Lin 5 Course Outcomes 1.Knowledge and skills of using MATLAB as a practical, technical problem solving tools (Criterion 2, Item a) 2.An ability to apply problem solving sills in mathematics and engineering technology problems (Criterion 2, Item b) 3.An ability to discuss ways and means of analyzing technical data (Criterion 2, Item c) 4.An ability to practice technical problem solving process including problem formulation, understand the problem, problem analysis, collect data, model development, algorithm development, solution implementation, solution verification, and report/presentation (Criterion 2, Items c, d, f, g) 5.Understanding of professional and ethical responsibility (Criterion 2, Item i, j) 6.Understanding of the contemporary engineering technology application issues (Criterion 2, Item k)

6. August 22, 2005 Lecture 1 - By P. Lin 6 Text Book & References Text book: Text book: MATLLAB Programming for Engineers, newest Edition, by Stephen J. Chapman, 3 rd., from Brooks/Cole Thomson Learning, http://info.brrokscole.com/chapmanMATLLAB Programming for Engineers, newest Edition, by Stephen J. Chapman, 3 rd., from Brooks/Cole Thomson Learning, http://info.brrokscole.com/chapman http://info.brrokscole.com/chapman Computer, Software, Internet Connection: Computer, Software, Internet Connection: MATLAB Student Version with SIMULINK, available for purchase from The MathWorks, Inc., http://mathworks.comMATLAB Student Version with SIMULINK, available for purchase from The MathWorks, Inc., http://mathworks.comhttp://mathworks.com Off campus students are required to have their own PCs, and install Student version of MATLAB and SIMULINK.Off campus students are required to have their own PCs, and install Student version of MATLAB and SIMULINK. Internet connection from home, IPFW, or work is required.Internet connection from home, IPFW, or work is required. References References Math Problem Solving, John Hopkins University, http://cty.jhu.edu/math/solving/Math Problem Solving, John Hopkins University, http://cty.jhu.edu/math/solving/ http://cty.jhu.edu/math/solving/ Mathworks MATLAB Examples, http://www.mathworks.com/access/helpdesk/help/techdoc/m atlab.shtmlMathworks MATLAB Examples, http://www.mathworks.com/access/helpdesk/help/techdoc/m atlab.shtml http://www.mathworks.com/access/helpdesk/help/techdoc/m atlab.shtml http://www.mathworks.com/access/helpdesk/help/techdoc/m atlab.shtml MATLAB Basics - http://www.maths.uq.edu.au/~mrb/tutors/matlabbasics.htmlMATLAB Basics - http://www.maths.uq.edu.au/~mrb/tutors/matlabbasics.html http://www.maths.uq.edu.au/~mrb/tutors/matlabbasics.html MATLAB Basic Tutorial, http://www.engin.umich.edu/group/ctm/basic/basic.htmlMATLAB Basic Tutorial, http://www.engin.umich.edu/group/ctm/basic/basic.html http://www.engin.umich.edu/group/ctm/basic/basic.html

7. August 22, 2005 Lecture 1 - By P. Lin 7 Overview of the Course Topics of Discussion Problem solving definition, process, techniques, strategies, tools, etc Problem solving definition, process, techniques, strategies, tools, etc MATLAB basics and advanced data types, commands, script, functions, and program controls MATLAB basics and advanced data types, commands, script, functions, and program controls Math Equations and their graphs Math Equations and their graphs Elementary MATLAB Math functions and their applications Elementary MATLAB Math functions and their applications Programming with MATLAB, File I/Os Programming with MATLAB, File I/Os MATLAB Problem Solving Applications in Electronics and Electrical, Physics, Engineering Technology, Data Analysis, etc MATLAB Problem Solving Applications in Electronics and Electrical, Physics, Engineering Technology, Data Analysis, etc Problem Solving Projects: team-based, collaborative problem solving Problem Solving Projects: team-based, collaborative problem solving

8. August 22, 2005 Lecture 1 - By P. Lin 8 Problem Solving Definition of Problem Solving Definition of Problem Solving What is a Problem 1,2 – A situation, quantitative or otherwise, that confronts an individual or group of individuals for a specific purpose that requires resolution, and for which the individual see no apparent or obvious means or path to obtaining the solution.What is a Problem 1,2 – A situation, quantitative or otherwise, that confronts an individual or group of individuals for a specific purpose that requires resolution, and for which the individual see no apparent or obvious means or path to obtaining the solution. What is Problem Solving 1,2 – A process in which one individual uses previously acquired knowledge, skills, and understanding to satisfy the demands of an unfamiliar situation.What is Problem Solving 1,2 – A process in which one individual uses previously acquired knowledge, skills, and understanding to satisfy the demands of an unfamiliar situation. Why Teach Problem Solving – stimulate students to practice critical thinking and prepares students to use math, physics, science, and discipline specific knowledge to solve real-world problems.Why Teach Problem Solving – stimulate students to practice critical thinking and prepares students to use math, physics, science, and discipline specific knowledge to solve real-world problems. [1] Problem Solving, A Handbook for Teacher, by Stephen Krulik and Jesse A. Rudnick, published by Allyn and Bacon, Inc., Massachusetts, 1980. [2] Problem Solving – Terminologies, http://www.mediafrontier.com/Article/PS/PS.htm http://www.mediafrontier.com/Article/PS/PS.htm

9. August 22, 2005 Lecture 1 - By P. Lin 9 Problem Solving (continue) Types of Problems 3 Types of Problems 3 Well-Defined ProblemsWell-Defined Problems Solved using standard methods, methods of similar problems, or methods of analog problems Solved using standard methods, methods of similar problems, or methods of analog problems Examples: puzzles, simple games, low-level math, science, and engineering Examples: puzzles, simple games, low-level math, science, and engineering ILL-Defined ProblemsILL-Defined Problems Unexplored problem domains Unexplored problem domains Not clear what the problem is and what the solution is Not clear what the problem is and what the solution is Approximate solution Approximate solution Wicked-Defined ProblemsWicked-Defined Problems Worse than ill defined problem Worse than ill defined problem Contains contradictory requirements Contains contradictory requirements Inventive/creative solutions Inventive/creative solutions [3] Problem Solving, http://cs.wwc.edu/~aabyan/Design/probSolv.html http://cs.wwc.edu/~aabyan/Design/probSolv.html

10. August 22, 2005 Lecture 1 - By P. Lin 10 Collaborative, Team-Based Problem Solving 4 Today's industrial environments, problem solving generally utilizes teams of people, from different countries, with different backgrounds and expertise to bring to bear on problems that often cross over formation, processing, manufacturing, distribution and marketing. 4 Today's industrial environments, problem solving generally utilizes teams of people, from different countries, with different backgrounds and expertise to bring to bear on problems that often cross over formation, processing, manufacturing, distribution and marketing. 4 Not all technically correct answers are feasible in commercial practice. 4 Not all technically correct answers are feasible in commercial practice. 4 For example, a correct solution cannot be implemented because it is contrary to the marketing strategy for the product or that the solution may require greater capitol expenditure than is economically feasible 4 For example, a correct solution cannot be implemented because it is contrary to the marketing strategy for the product or that the solution may require greater capitol expenditure than is economically feasible [4] Technical Problems and Problem Solving, http://class.fst.ohio- state.edu/fst696/696%20Technical%20Problems%20and%20Problem%20solving.htm

11. August 22, 2005 Lecture 1 - By P. Lin 11 Problem Solving with a Computer 5 Define the problem Define the problem Formulate a mathematical model Formulate a mathematical model Develop an algorithm Develop an algorithm Write the code for the problem Write the code for the problem Test program and verify the solution Test program and verify the solution Document the program and solution Document the program and solution [5] Problem Solving with a Computer, http://www.aspire.cs.uah.edu/textbook/introcomp6004.html

12. August 22, 2005 Lecture 1 - By P. Lin 12 Problem Solving in this Course Needs Needs Basic skills of mathematics, electrical and electronicsBasic skills of mathematics, electrical and electronics Critical thinkingCritical thinking MATLAB: Engineering and science computing toolMATLAB: Engineering and science computing tool

13. August 22, 2005 Lecture 1 - By P. Lin 13 Introduction to MATLAB What is MATLAB? Short for MATrix LABoratory Short for MATrix LABoratory Capable of solving any technical problems Capable of solving any technical problems A Special-purpose, interpreter-based, computer program for technical computing and simulation, engineering and scientific computing, numerical computation and visualization without intensive programming knowledge. A Special-purpose, interpreter-based, computer program for technical computing and simulation, engineering and scientific computing, numerical computation and visualization without intensive programming knowledge. MATLAB computing environment MATLAB computing environment 6 The company Mathworks www.mathworks.com. 6 The company Mathworks www.mathworks.com. [6] The MathWorks, http://www.mathworks.com/

14. August 22, 2005 Lecture 1 - By P. Lin 14 Introduction to MATLAB (continue) The Advantage of MATLAB Ease of Use Ease of Use Platform Independence Platform Independence Predefined Functions Predefined Functions Device-Independent Plotting Device-Independent Plotting Graphical User Interface Graphical User Interface MATLAB Compiler MATLAB Compiler Disadvantages of MATLAB Interpreted language – slow Interpreted language – slow Cost Cost

15. August 22, 2005 Lecture 1 - By P. Lin 15 Introduction to MATLAB (continue) The MATLAB Environment includes Graphical user interface Graphical user interface MATLAB desktop and Command Window MATLAB desktop and Command Window A command history A command history An editor and debugger, and An editor and debugger, and A Browser for viewing help, the workspace, files, and the search path. A Browser for viewing help, the workspace, files, and the search path.

16. August 22, 2005 Lecture 1 - By P. Lin 16 Introduction to MATLAB (continue) MATLAB Desktop – the main interface for working with MATLAB MATLAB Desktop – the main interface for working with MATLAB

17. August 22, 2005 Lecture 1 - By P. Lin 17 MATLAB Electrical Calculator: an Interactive Session Start MATLAB Start MATLAB Example1: Enter the following lines on the MATLAB Command Windows Example1: Enter the following lines on the MATLAB Command Windows >> watt = 100; >> volt = 110; >> i = watt/volt i = 0.9091 0.9091 Double Click the Command in the Command History Window Double Click the Command in the Command History Window Workspace Command Window Command History

18. August 22, 2005 Lecture 1 - By P. Lin 18 MATLAB Electrical Calculator: an Interactive Session (continue) Example 2: Calculate the area of a circle with a radius of 0.001 inch (π r 2 ). Example 2: Calculate the area of a circle with a radius of 0.001 inch (π r 2 ). >> pi ans = 3.1416 3.1416 >> area = pi*0.001^2 area = 3.1416e-006 3.1416e-006>>

19. August 22, 2005 Lecture 1 - By P. Lin 19 MATLAB: an Interactive Session Example 3: Sum of 12 numbers with continue statement on successive lines by typing an ellipsis (…) at the end of the first line Example 3: Sum of 12 numbers with continue statement on successive lines by typing an ellipsis (…) at the end of the first line >> x = 1 + 2+3+4+5+6+7+8+9+10+11+12 x = 78 78 >> x = 1 + 2 + 3 + 4 +... 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 x = 78 78

20. August 22, 2005 Lecture 1 - By P. Lin 20 Summary Problem Solving Problem Solving Problem Solving with a Computer Problem Solving with a Computer Introduction to MATLAB Introduction to MATLAB A Sample MATLAB Session A Sample MATLAB Session Example 1: Calculate I = watt/voltExample 1: Calculate I = watt/volt Example 2: Calculate the area of a circle with a radius of 0.001 inch (π r2).Example 2: Calculate the area of a circle with a radius of 0.001 inch (π r2). Example 3: Sum of 12 numbers with continue statement on successive lines by typing an ellipsis (…) at the end of the first lineExample 3: Sum of 12 numbers with continue statement on successive lines by typing an ellipsis (…) at the end of the first line Next: Math Problem Solving with MATLAB Next: Math Problem Solving with MATLAB

21. August 22, 2005 Lecture 1 - By P. Lin 21 Question? Answers Email: lin@ipfw.edu