Professor Gilbert Strang taught linear algebra for 61 years. His free online lectures, part of MIT OpenCourseWare, reached ...

This is a subject I struggled with the first time I took it. Ironically, this was the engineering version of it. It wasn't until I took the rigorous, axiomatic version that everything clicked.

Add Yahoo as a preferred source to see more of our stories on Google. Schools are often described as engines of opportunity — places where students gain the skills and knowledge needed to build their ...

So, bad news: I flunked linear algebra. Good news: I didn't have to take it to begin with, it doesn't count towards my major GPA, and I can move on to differential equations w/linear algebra. On a ...