I just finished his linear algebra 18.06 from year 2005...Good Heavens! I've studied in university for 10 years and I haven't come across a better math lecturer. Superb teaching!!! I finished the course and I can comfortably do some matrix operations without writing them down. Wishing you many more happy years and good health prof. Strang.####[['prof. Strang.', 'Instructor', 'POS'], ['math lecturer', 'Course_General_Feedback', 'POS'], ['course', 'Course_General_Feedback', 'POS']]