I am TAing MAT223: Linear Algebra I during the 2018 Winter Semester. This web-page will be used to share supplemental material for my two Tutorials: *TUT0105 (BA1200, Tuesdays 12-1PM) and TUT5105 (BA1220, Wednesdays 5-6PM)*. Please note this is not an official webpage for the course, but rather a place that I’ll add further clarifications to the tutorials, or resources that I used when first learning Linear Algebra that I’d like to share.

- Here’s a proof showing ||proj_d(v)||≤||v||.
- Correct Definition of a Shear Mapping.
- An explanation of Orthogonal Compliments.

**Additional Links:**

- A superb YouTube video series on providing the geometrical intuition behind every major topic in this course may be found here: 3Blue1Brown’s Essence of Linear Algebra.
- If you ever would like to check your matrix calculations, I would suggest using WolframAlpha to do so. For example, say you are calculating the inverse of the matrix [1, 2 ; 3, 4]. Typing into http://wolframalpha.com the expression “Find the matrix inverse of {{1,2},{3,4}}” will yield the answer.
- Lastly, after reading through the textbook and course resources, if you are still experiencing difficulty with some of the computations in this course (and you’d like an immediate explanation rather than asking me later or posing your question in office hours), I’d recommend watching the relevant Khan Academy Linear Algebra explanatory video.

MAT334 – Complex Variables – Fall 2017

- Math StackExchange: A good place to seek out hints for specific problems
- Dr. Tyler Holden’s Notes: Course/TA Notes for MAT135/136, MAT137, MAT138 ( MAT102), MAT223 & MAT237
- Current Undergraduate Mathematics Students’ Homepage: Links to Course Calendars, Timetables, and Other Useful Information

Please feel free to contact me if you might have any questions/inquiries.

All material on this web page and all sub web pages is copyright by Jonathan Mostovoy. All rights reserved.