de Moivres Nth Root Function on returns 2 out 5 roots? Spot the fault?
3 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
FortuitousMonkey
am 15 Mär. 2018
Kommentiert: FortuitousMonkey
am 15 Mär. 2018
Hi,
I wonder if anyone could help me find the fault in the code? When I call the function using the below it only returns 2 values, the first and last root, but misses 3 in the middle, subsequently my plot is also incorrect (it should return 5 equally spaced points). I can't find any error in the code.
>> complex_root1(2+3j,5)
D =
1.2675 + 0.2524i 0.6317 - 1.1275i
My function is
function res=complex_root(z,N)
%z is the complex number
%n is the number of roots, must be positive and larger than o
k=[0,N-1];
%Logic statement if N above 0 proceed with calculation
if N>0
a=complex(z);
magnitude=abs(a);
r=(abs(a));
t=angle(a);
%de Moivre's forumla
D=r^(1/N)*((cos((t+2*pi*k)/N))+((1i*sin((t+2*pi*k)/N))))
polarplot (D)
%Logical statement, if N below zero return error message
elseif N<=0;
disp 'N must be a positive integer above 0'
end
end
0 Kommentare
Akzeptierte Antwort
David Goodmanson
am 15 Mär. 2018
Bearbeitet: David Goodmanson
am 15 Mär. 2018
Hi Owen, try
k = 0:N-1;
which gives all five values for k.
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Marine and Underwater Vehicles finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!