MATH 21 Study Guide - Midterm Guide: Triangular Matrix, Augmented Matrix, Cheat Sheet
Document Summary
Suggestions: you will be allowed to use a one page cheat sheet" a single 8. 5 11 sheet of paper with whatever you want (as long as it"s polite) written on both sides. Prepare a draft cheat sheet before starting on these practice problems and test it out; if it doesn"t help you much, improve it. Practice for that choice by reading over the entire set of problems before starting to fully solve any of them. Strategize: start with the ones you"re most con dent about. Avoid doing calculations that don"t need to be done. Look for information or results from one part of a problem that you can recycle" in another part, or in another problem. You must justify your answers to receive any credit for them. + x3: find all vectors that are perpendicular to both. 5. (a) express the systems of equations x1 + x2.
