Differences

This shows you the differences between two versions of the page.

--- faq [2011/09/21 13:45] – asif
+++ faq [2011/09/29 19:15] (current) – asif
@@ Line 8: / Line 8: @@
 [[faq#QB2. What is the policy on academic dishonesty?|QB2. What is the policy on academic dishonesty?]]\\
-== Lab Test ==
+== Tests and Exams ==
 [[faq#QC1. What if I cannot come to the test due to a conflict?|QC1. What if I cannot come to the test due to a conflict? ]]\\
 [[faq#QC2. What should I bring with me?|QC2. What should I bring with me?]]\\
@@ Line 21: / Line 21: @@
 [[faq#QD2. Can I write the final test in pencil?|QD2. Can I write the final test in pencil?]]\\
 [[faq#QD3. When will the final results be announced?|QD3. When will the final results be announced?]]\\
-[[faq#QD4. I think there is an error in the marking of my final (lab)test!|QD4. I think there is an error in the marking of my final (lab)test!]]\\
+[[faq#QD4. I think there is an error in the marking of my final exam!|QD4. I think there is an error in the marking of my final exam!]]\\
+== Student Questions on Assignment 1: ==
+[[faq#QE1. For the assignment Problem 1.8 # (iv), how did you make exp(j(pi*k/2 + pi/8)) = 1. I don't understand this equality.|QE1. For the assignment Problem 1.8 # (iv), how did you make exp(j(pi*k/2 + pi/8)) = 1. I don't understand this equality.]]\\
+[[faq#QE2. How do i Evaluate and find the period of exp(-j*pi*k).|QE2. How do i Evaluate and find the period of exp(-j*pi*k).]]\\
+[[faq#QE3. If (-1^k) = exp(j*pi*k), what does (-5^k) or (5^k) equal to?|QE3. If (-1^k) = exp(j*pi*k), what does (-5^k) or (5^k) equal to?]]\\
 == QB1. Do I have to use my Prism account for email? ==
@@ Line 29: / Line 33: @@
 == QB2. What is the policy on academic dishonesty? ==
 B3. We take matters related to academic dishonesty seriously. To that end, measures to detect irregularities are in place and are continually upgraded. For example, tests are photocopied before being returned to the students. More about academic dishonesty can be found [[http://www.cse.yorku.ca/admin/coscOnAcadHonesty.html|here]].
+----
 == QC1. What if I cannot come to the test due to a conflict? ==
@@ Line 50: / Line 56: @@
 == QC7. What if I missed a test? ==
 C7. No make-up tests will be given. If you miss a test for reasons beyond your control, inform your instructor as soon as possible. If approved, the weight of the missed (lab)test will be distributed to later (lab)tests in the course. It is recommended in this case that you ask your instructor for a copy of the (lab)test so you can attempt it at home.
+----
 == QD1. How do I find out the date / place of the final (lab)test? ==
@@ Line 60: / Line 68: @@
 D3. The results are typically posted on ePost within 20 days of the final (lab)test.
-== QD4. I think there is an error in the marking of my final (lab)test!==
+== QD4. I think there is an error in the marking of my final exam!==
-D5. Wait until you get your official grade by regular mail from York (nothing can be done before that). Within three weeks of receiving them, go to CSEB-1003 and request a copy of your final (lab)test. If you spot errors, either in marking, or in addition, or in the overall grade computation, petition by submitting a special form called [[http://www.cse.yorku.ca/~asif/2021Fall10/reapTest.txt|"Request for Grade Reappraisal"]]
+D5. Wait until you get your official grade by regular mail from York (nothing can be done before that). Within three weeks of receiving them, go to CSEB-1003 and request a copy of your final exam. If you spot errors, either in marking, or in addition, or in the overall grade computation, petition by submitting a special form called [[http://www.cse.yorku.ca/~asif/2021Fall10/reapTest.txt|"Request for Grade Reappraisal"]]
 available from CSEB-1003.
+----
+== QE1. For the assignment Problem 1.8 # (iv), how did you make exp(j(pi*k/2 + pi/8)) = 1. I don't understand this equality. ==
+E1. Note that exp(j(pi*k/2 + pi/8)) does not equal 1 but the magnitude of exp(j(pi*k/2 + pi/8)) equals 1.
+Recall exp(j \theta) = cos \theta + j sin \theta
+Now, | exp(j \theta) | = sqrt (cos^2 \theta + sin^2 \theta) = sqrt (1) = 1
+== QE2. How do i Evaluate and find the period of exp(-j*pi*k). ==
+E2. Note that exp(-j*pi*k) = cos(pi*k) - j sin(pi*k).
+Since sin(pi*k) = 0, therefore, exp(-j*pi*k) = cos(pi*k) which has a period of pi radians/s or 1/2 Hz.
+== QE3. If (-1^k) = exp(j*pi*k), what does (-5^k) or (5^k) equal to? ==
+E3. You can not express (-5^k) or (5^k) in the form that (-1^k) was expressed.
+----