Bruce Mayer, PE Licensed Electrical & Mechanical Engineer BMayer@ChabotCollege

1. Engr/Math/Physics 25 Tutorial-1Intro VideosBuild HW File Bruce Mayer, PE Licensed Electrical & Mechanical EngineerBMayer@ChabotCollege.edu

2. First ENGR25 Tutorial • MATLAB Video Tutorials • http://www.mathworks.com/academia/student_center/tutorials/launchpad.html • http://www.mathworks.com/videos/matlab/getting-started-with-matlab.html (6 min) • http://www.mathworks.com/videos/matlab/writing-a-matlab-program.html (6 min) • http://www.mathworks.com/videos/matlab/using-basic-plotting-functions.html (6 min) • http://www.mathworks.com/videos/simulink/getting-started-with-simulink.html (3.5 min min)

3. First ENGR25 Tutorial • MATLAB Video Tutorials • http://www.mathworks.com/academia/student_center/tutorials/launchpad.html • http://www.mathworks.com/videos/matlab/creating-a-basic-plot-interactively.html (6 min)

4. HW File MSWord Starting Point

5. Example Problem 1-21 • Plot This Function Time For Live Demo • Where • T  Temperature (°C) • t  time (minutes) • For: 1  t  3

6. 3x3 from ENGR43 • For The DC Linear Circuits We Will need to Solve Systems Of Algebraic Equations

7. First ENGR25 Tutorial • Additional Videos Useful in the future • http://www.mathworks.com/videos/matlab/importing-data-from-files.html (HW5, 7min) • http://www.mathworks.com/products/simulink/demos.html?BB=1 (SimuLink) • http://www.mathworks.com/videos/simulink/getting-started-with-simulink.html (4 min) • http://www.mathworks.com/videos/simulink/visualizing-simulation-results.html (4 min) • HW Presentation  Save MATLAB work to MSWord file • Trapezoid area, 3x3 Eqn System, cosh calculation, plot y = ln(t+.02)·sin(1.3t) Demonstrate Next Time

8. Additional Useful Videoshttp://www.mathworks.com/products/matlab/demos.html

9. 3x3 from ENGR43 • For The DC Linear Circuits We Will need to Solve Systems Of Algebraic Equations

10. Day1 demo Script

11. DeskTop Recoveryto UnScramble the DeskTop

12. All Done for Today Please TryUsingMATLABin 3906A • Let’s do MQ-00b

13. Let’s do MQ-00b • Let’s do MQ-00b

14. Example Problem 1-21 • Plot This Function Time For Live Demo • Where • T  Temperature (°C) • t  time (minutes) • For: 1  t  3

15. Prob 1-21 >> t = [1:.01:3]; >> T = 6*log(t) - 7*exp(0.2*t); >> plot(t,T, 'LineWidth', 3) >> xlabel('t (Sec)') >> ylabel('T (deg C)') >> title('Temp vs time') >> grid

16. Engr/Math/Physics 25 Appendix Bruce Mayer, PE Licensed Electrical & Mechanical EngineerBMayer@ChabotCollege.edu

17. Example Demo Session >> %Use MATLAB As Calculator >> 17*19 ans = 323 >> 77/19 -4.3 ans = -0.2474 >> 64^(1/3) + 32^0.2 ans = 6 >> (7+11)*2.5 ans = 45 >> L = 14.4 L = 14.4000 >> W = 13.3 W = 13.3000 >> Area = L*W Area = 191.5200

18. Prob 1-21 Command Script • From the Command Window >> t = [1:0.02:3]; >> T = 6*log(t) - 7*exp(0.2*t); >> plot(t,T), xlabel('time (min)'),ylabel('Temperature (°C)'), title('Problem 1-21'), grid

19. Prob 1-22 Plot

21. System, Directory, File Cmnds