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10SFinal - ECE 301 Final exam of the session of Prof...

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ECE 301, Final exam of the session of Prof. Chih-Chun Wang Friday 1pm–3pm , May 7, 2010, CL50 224. 1. Enter your name, student ID number, e-mail address, and signature in the space provided on this page, NOW! 2. This is a closed book exam. 3. This exam contains both multiple-choice and work-out questions. The students are suggested not spending too much time on a single question, and working on those that you know how to solve. 4. There are 21 pages in the exam booklet. Use the back of each page for rough work. The last pages are all the Tables. You may rip the last pages for easier reference. Do not use your own copy of the Tables. Using your own copy of Tables will be considered as cheating. 5. Neither calculators nor help sheets are allowed. Name: Student ID: E-mail: Signature:
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Question 1: [20%] No need to write down justifications for this question. 1. [2%] x ( t ) = (cos(2 πt )) 2 2+sin(3 πt ) . Is x ( t ) periodic? 2. [2%] y ( t ) = sin(2000 πt ) 200 t . Is y ( t ) an odd signal? 3. [3%] Continue from the previous question. Is y ( t ) of finite power? Is y ( t ) of finite energy?
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