MATH1021 Lecture Notes - Lecture 1: Set Notation, Empty Set, Insitu

• School: University of Sydney
• Department: Mathematics
• Course: MATH1021
• Professor: Haotian Wu

Document Summary

Cs . t numbers sets f. of of collections qbjects. 1. 2 set notation is is an not element an of element. 3 a is the but is not equal to. At1b exclusive interval open xelthlacxsb } a b. X and y . atbi i. w it. :o a i is also sohtion eg 1. 5. 2ti numbers numbers are i ei non zero. Im ( = b er a real multiples of. E- f- z a quadratic each other with real coefficients are. E = a- bi z a bi a a a. E numbers to is atbi atbi ctdi ctdi ( a ( b. :ii=. e. peiiiit: eg } multiply by conjugate to special. = a2-6in ( bij denominator ze=o a- bif z=o at cttd case atbi real c- did. Ir is ordered eg acb or a > b or a. Iwi atbi bi ) z=z wtw and apply triangle inequality subsets of. Regions in the complex plane eg zeal i