Reddit reviews Precalculus: Functions and Graphs (4th Edition)
We found 1 Reddit comments about Precalculus: Functions and Graphs (4th Edition). Here are the top ones, ranked by their Reddit score.
Used Book in Good Condition
Yeah, all these questions specifically say to use Cramer's rule. This is from Pre-Calc book by Dugapolski (Amazon LINK) (I think pretty common in US colleges). Probably the worst Math book Ive ever used. Doesnt explain things well, most of the time by just doing examples and not really listing steps of how to do things. You are supposed to look at the steps and figure out how they got there.
The worst offense is that it always uses super easy problems as examples. In this case for example... they use super easy linear equations to show Cramer's rule... not once they show how to handle x^2 or y^2. Yet in homework problems as you can see they ask you to solve them.
Youtube basically taught me everything so far. Class started with 30 people, we're down to 12 now (people dropping the class). There are 2 A's 2B's 4 C's and rest are F's ... because of this stupid book. (I am one of the A's)