? =)(= Active Member Joined Jul 14, 2021 Messages 645 Gender Male HSC 2023 Sep 23, 2023 #1 for part iii the answer has 8 roots i.e +/- 2pi/9 and so on, should we not just take 4 of the roots cause the degree is 4?
for part iii the answer has 8 roots i.e +/- 2pi/9 and so on, should we not just take 4 of the roots cause the degree is 4?
M member 6003 Member Joined Apr 20, 2022 Messages 80 Gender Male HSC 2023 Sep 23, 2023 #2 if you're solving for cos(a) then it should be 4 roots, its degree 4 for a polynomial where x=cosa but if you're solving for alpha it should be different
if you're solving for cos(a) then it should be 4 roots, its degree 4 for a polynomial where x=cosa but if you're solving for alpha it should be different
? =)(= Active Member Joined Jul 14, 2021 Messages 645 Gender Male HSC 2023 Sep 23, 2023 #3 ohh right okay that makes sense cheers
