Exercises: ) Find the following limits: , b) lim aZ+ 2-2 240 cz+ th 2) Use the definition of limit t. prove; In lim ?=4 22 3) Determine all points at whichthe following any functions are not...

solve exercies 4

Extracted text: Exercises: ) Find the following limits: , b) lim aZ+ 2-2 240 cz+ th 2) Use the definition of limit t. prove; In lim ?=4 22 3) Determine all points at whichthe following any functions are not Continuous: b) fre = sin num a) fras=32'+4, +1 7² +4 %3D 4) prove that the function fray=12? is continmons in the whole Complex plane. SIF the functions f), 16) ake Sntinuons