it was more of basics and not hard except the partial derivatives
1 star because there is nothing basic about the mathematics in this "basic" mathematics course. Why are complex numbers covered in the FIRST lesson of a BASIC mathematics course?? I have no idea what any of this stuff is!! I thought that "basic" meant that it would start with explaining what a number is and progress from there. I had never heard of or even knew there are "real" and "complex" number systems. FALSE ADVERTISING!!
