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    %% Find Roots of Number  

%% 
% Calculate the roots of |-1| to the |1/3| power. 
A = -1;
B = 1/3;
C = A.^B 

%%
% For negative base |A| and noninteger |B|, if |abs(B)| is less than |1|,
% the |power| function returns the complex roots of |A|.  

%% 
% Use the |nthroot| function to obtain the real roots. 
C = nthroot(A,3)