double precision becomes complex double after calculation

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CAL
CAL el 21 de Ag. de 2018
Comentada: CAL el 22 de Ag. de 2018
The outputs for c1(p) becomes complex double after calculation. However, it should be double precision since I am just raising the power of the element. Is there any possibility to fix it? I calculated manually and all the outputs should be double precision.

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Steven Lord
Steven Lord el 21 de Ag. de 2018
-1 is real. 0.5 is real. (-1)^(0.5) is complex. There's nothing to "fix" as that's the expected behavior.
If you want MATLAB to throw an error when you raise a real number to a real power and would receive a complex result, use the realpow function.

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