/sci/ - Science & Math

>>10427747
Same shit here. Things like 2-(-2)+2 and I'm wrong 50% of the time. I've just developed a couple of tricks that let me make fewer mistakes (don't know if it is just my brain works better when I do things this way): when multiplying two matrixes write them not one after another but above each other, like in picrelated, which is more visual than regular way. When finding determinant of the matrix always use the rule of sarrus because it is more dumb compared to rref. And in general I tend to choose approaches that are as dumb and as visual as possible: if you can throw out absolutely all thinking steps and boil everything down to simple algorithm you are less likely to make mistakes. (Like tabular integration vs integration but parts, technically identical, but first one is 100 times faster and easier).

And I also always write matrices in square braces, don't know but it makes it easier for me.

And you might also want to develop habit of how you arrange steps of your solution for particular types of problems and follow then carefully each time.