Re:Notes on Discrete Mathematics (2017) [pdf]
by hinkley on Monday June 25, 2018 @01:28PM
(#17394096)
Because the books aren't for self-taught people.
They're to sell a crapload of books indirectly through University professors.
As for the "you should know" angle, I do believe that a lot of problems chosen for math classes are chosen because they are asymmetric. That is, getting the answer is much harder than checking the answer. For fractions or systems of equations you absolutely can check your work. It's frustrating for me that nobody appears to be teaching kids that.
If you want to get an A on a college level math test your best use of time left over at the end of the test is to check your work.
They're to sell a crapload of books indirectly through University professors.
As for the "you should know" angle, I do believe that a lot of problems chosen for math classes are chosen because they are asymmetric. That is, getting the answer is much harder than checking the answer. For fractions or systems of equations you absolutely can check your work. It's frustrating for me that nobody appears to be teaching kids that.
If you want to get an A on a college level math test your best use of time left over at the end of the test is to check your work.