RADICAL Real specified roots of real array.
Y = RADICAL(X, N) returns the real roots of polynomials Y.^N - X .
Elements of N that correspond to negative elements of X must be odd
X and N must have the same dimensions unless one is a scalar.
A scalar can operate into anything.
See also realpow, nthroot
>> x = [-1 -64 81; 32 0 49; 0 1 0]; n = [3 3 4; 5 2 2; 0 0 inf];
-1 -4 3
2 0 7
NaN 1 1
RADICAL is a replacement for NTHROOT which is famous for bugs.
Mukhtar Ullah (2023). RADICAL (https://www.mathworks.com/matlabcentral/fileexchange/6171-radical), MATLAB Central File Exchange. Retrieved .
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rewritten to avoid the function nonzeros of Matlab 7