Linear Algebra

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answer_template_for_lab61.docx

ENGR 231 – Linear Engineering Systems

Lab 6: Summer 2016

Your Name: _______________________ Indicate Section: 61 or 62.

As a convenience, this answer template is provided if you wish to easily submit your work. Be sure to save it as a PDF before submitting online! Only one submission is allowed.

Question 1. Translation in homogeneous coordinates.

Question 1: Paste your code for translate(dx,dy) here, then include the output for the line included near the bottom.

Show the result for the following command.

>> translate(1,2) * [2; 3; 1]

Questions 2-3: Paste in your plot with all three rectangles here for two points credit.

Question 4: Kandinsky Art: Create an abstract art painting, and paste it here.

Question 5: Rotations in homogeneous coordinates.

Question 5: Paste your code for rotate(angle_in_deg) here, then include the output for the line included near the bottom.

Show the result for the following command.

>> rotate(45) * [sqrt(2); 0; 1]

Questions 6-7: Mandala Figure:

Replace the given figure with your own Mandala. Must have at least five rings – not just four. Be creative! Consider changing the marker size.

Question 8: Scaling in homogeneous coordinates.

Question 8: Paste your code for scale(k) here, then include the output for the line included near the bottom.

Show the result for the following command.

>> scale(2) * [1; 2; 1] Answer: _ _ _

Questions 9-10: Combining scaling and translation to generate the Sierpinski Gasket.

Questions 9-10: Paste in your new switch block code here. All three cases should be rewritten using scale() and translate() and P.

switch c

case 0

P = scale(0.5)*P; % Given for free!

case 1

% Complete this case using translate and scale.

case 2

% Complete this case using translate and scale.

end

When your lab is complete, be sure to submit it as a PDF by the due date – this Thursday before 11:59PM. You have one more day, to submit the lab (but with a small penalty), and then the window closes for good and your grade will be zero. Only one submission is allowed per student.

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