Yasser F. O. Mohammad 2010.9.22. Teaching Team Instructor: Yasser F. O. Mohammad Computers and Systems section (Intelligent Robotics)

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Presentation transcript:

Yasser F. O. Mohammad

Teaching Team Instructor: Yasser F. O. Mohammad Computers and Systems section (Intelligent Robotics) Web: TA: Eng. George & Eng. Mostafa Course Website: Google Group: Web:

Course Philosophy Mathematics: Proofs Convergence Error Analysis. Programming: Performance Encapsulation Reuse. Applications: Modeling Simulation Control. Algorithms Software Programs Problems Enhancements Challenges

Text Books Main Text Numerical Methods Using Matlab John H. Mathews and Kurtis D. Fink More on the mathematics Other References Numerical Methods for Engineers Steven Chapra and Raymond Canale Numerical Methods in Engineers using Matlab Jaan Kiusalaas More on Matlab Applied Numerical Methods using Matlab Won Y. Yang and others More advanced but VERY VERY USEFUL Numerical Recipes William Press and Others Best numerical methods book ever!! Everything in C++

Course Syllabus Introduction to Matlab Systems of Linear Equations Nonlinear Equations Interpolation and Curve Fitting Differentiation and Integration Ordinary Differential Equations Optimization Matrices and Eigenvalues

What is Numerical Methods Numerical methods are techniques by which mathematical problems are formulated so that they can be solved with arithmetic operations.

Example Find the solution to the following equation: Analytical Solution Correct to 4 decimal places Numerical Solution Try 1  1.2  1.8  1.6  1.62  

Numerical Versus Analytical NumericalAnalytical approximateexact more intuitiveless intuitive easily codednot so easy easy to getnot so easy Finds a solutionFinds the solution May divergeAlways finds the solution This course!!Not in this course!!

Round-off Errors Round-off errors occur because computers retain only a fixed number of significant figures. We use the decimal (base 10) system which uses the 10 digits 0, 1, …, 9.

Numbers on the computers are represented with a binary (base 2) system.

How are numbers represented in computers? Numbers are stored in what is called ‘word’. A word has a number of bits, each bit holds either 0 or 1. For example, -173 is presented on a 16-bit computer as Word

On a 16-bit computer, the range of numbers that can be represented is between -32,768 and 32,767.

Floating Point Representation Word (normal form) ×10 3 (floating point form)

There is a limited range of numbers that can be represented on computers. Conclusion