• Best of luck to the class of 2025 for their HSC exams. You got this!
    Let us know your thoughts on the HSC exams here

Complex Numbers Question... (1 Viewer)

Joined
Jan 13, 2011
Messages
354
Gender
Male
HSC
N/A
cant you do the first part, showing it instead of stating it, you are a mad noob ohexploitable, that parts easy
 

deterministic

Member
Joined
Jul 23, 2010
Messages
423
Gender
Male
HSC
2009
(a) Let P(x)=px^4+qx^3+rx^2+sx+t where p, q, r,s, t are real
P(a)=0 implies pa^4+qa^3+ra^2+sa+t = 0
Show P(conj(a))=0
Sub into P(x), use the fact conj(a^n)=conj(a)^n, pconj(a)=conj(pa) if p is real.
try it yourself
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top