2003-12.md

course	course_year	question_number	tags	title	year
Complex Methods	IB	12	IB 2003 Complex Methods	4.I.8B	2003

Find the Laurent series centred on 0 for the function

$$f(z)=\frac{1}{(z-1)(z-2)}$$

in each of the domains (a) $|z|<1$, (b) $1<|z|<2$, (c) $|z|>2$.