EGR 106 Intro to Engineering II

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EGR 106 Intro to Engineering II

• Engineering problem solving using MATLAB
• Text Amos Gilat, MATLAB An Introduction with
  Applications, Wiley 2004 ISBN 0-471-43997-5

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Instructor Section 3

• James C Daly, Dept of Electrical and Computer
  Engineering,
• 120 Kelley Annex
• Office hours TWR 1 -3pm
• daly_at_egr.uri.edu
• 874-5844 (Office) 789-0654(Home) 742-5759(Cell)

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Grading

• Attendance 15
• Homework 30
• 3 Quizzes 30
• Team project 25

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Homework

• 30 of your grade
• No partial credit
• Done during lab.
• If you can not solve a problem, get help.
• 10 point scale for each assignment
• Late home work penalty is 2 points
• Not accepted after one week.

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MATLAB

• MATrix LABoratory
• Powerful
• Easy to use
• Expandable
• Great graphics
• Get your free (almost) copy of MATLAB for your PC
  from the wizards at ECL (Kirk203)

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Arithmetic Operations

• Addition 22
• Subtraction - 3-2
• Multiplication 36
• Right Division / 7/3
• Left Division \ 7\3 3/7
• Exponentiation 23 8

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Precedence

• Precedence is the order operations are preformed
• (32) anything in parentheses is done first
• 52 exponentiation is next
• 22 or 10/5 multiplication or division next
• 11 or 5-3 addition or subtraction next
• Operations are done from left to right

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Precedence Example

• 2(6/2) 23 8
• 26/2 64/2 32

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Some Syntax

• Assignment operator
• gt x 1
• gt x 2x1
• The value of x is 3 not -1

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Predefined Variables

• ans
• pi p
• eps 2(-52) about 2.22e-16
• inf 1/0
• i sqrt(-1)
• j Same as i
• NaN Not a number 0/0

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Some Functions

• Elementary Math, sqrt(x), exp(x), etc.
• Trig, sin(x), cos(x), x is in radians
• Rounding functions , round(x), etc