# matlab - CDA6530: Performance Models of Computers and...

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CDA6530: Performance Models of Computers and Networks Chapter 4: Using Matlab for Performance Analysis and Simulation

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2 Objective Learn a useful tool for mathematical analysis and simulation Interpreted language, easy to learn Use it to facilitate our simulation projects A good tool to plot simulation/experiment results figures for academic papers More powerful than excel Could directly create .eps for Latex
3 Introduction MatLab : Mat rix Lab oratory Numerical Computations with matrices Every number can be represented as matrix Why Matlab? User Friendly (GUI) Easy to work with Powerful tools for complex mathematics Matlab has extensive demo and tutorials to learn by yourself Use help command

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4 Matrices in Matlab To enter a matrix 2 5 3 6 4 1 >> A = [2 5 3; 6 4 1] >> B = [1:1.5:6; 2 3 4 5] >> for i=1:4 for j=1:3 C(i,j)=i*j; end end >> D =[]; D=[D;5]; D=[D;6;7] >> E = zeros(4, 5)
5 Basic Mathematical Operations Remember that every variable can be a matrix! Addition: >> C = A + B Subtraction: >> D = A – B Multiplication: >> E = A * B (Matrix multiplication) >> E = A .* B (Element wise multiplication, A and B same size) Division: Left Division and Right Division >> F = A . / B (Element wise division) >> F = A / B = A*inv(B) (A * inverse of B) >> F = A . \ B (Element wise division) >> F = A \ B=inv(A)*B (inverse of A * B)

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6 Matrix with ZEROS: >> A = zeros(m, n)
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## This note was uploaded on 01/14/2012 for the course CDA 6530 taught by Professor Zou during the Fall '11 term at University of Central Florida.

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matlab - CDA6530: Performance Models of Computers and...

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