Term:
Invertible
Definition:
-when AC = I or BA = I. -Let A be an nxn matrix then A is invertible if there is another nxn matrix A^-1 such that AA^-1 = Identity and A^-1A = Identity -A has a pivot in every row and column -reduced echelon form of A is Identity -linear dependence = not invertible.
Average Rating (from 5 Students)
Course Difficulty
Easy 0%
Medium 100%
Hard 0%
Top Course Tags
Math-heavy
Many Small Assignments
Background Knowledge Expected
Not too easy. Not too difficult.
Course Overview:
at the time, the material seemed very hard but after finishing the class and still using the concepts, they seem easier and are obviously very useful
Course highlights:
lectures were not very useful to go to but clas was very helpful and webwork helped to master concepts
Hours per week:
6-8 hours
Advice for students:
there is longf homework so be prepared to put time into it. not too many problems but the problems are very long and time consuming. no practice midterm or final
Not too easy. Not too difficult.
Course Overview:
I felt indifferent about this class because it was one that I had to take for my major. It wasn't too difficult, but my professor especially was very hard to understand. I recommend going to office hours or enrolling in CLAS.
Course highlights:
This course was titled Linear Algebra, so it was a lot of simple computations, functions, and matrices.
Hours per week:
3-5 hours
Advice for students:
You do have to work hard for this class, but you shouldn't stress about it too much. If you pay attention to lecture or receive outside help, you will succeed.
Not too easy. Not too difficult.
Course Overview:
lectures didn't help and the midterm was very difficult. a lot of the homework didn't correspond to the lectures
Course highlights:
going to section helped to understand what was going on and how to answer the homework problems
Hours per week:
6-8 hours
Advice for students:
know how to do the homework by hand, even though you can find matrix calculators for most of the problems