Dear pdl folks, doing $x=pdl(-3) with PDL v2.081 we obtain $x**2-9==0 but, defining $z=-3+0*i $z**2-9 =! 0 while $z*$z-9 ==0
May be integer power are computed differently for real but not for intrinsic complex? (logarithmically for any power) Regards -- Dr. Guillermo P. Ortiz Electromagnetismo Aplicado Dto. Física, Facultad de Ciencias Exactas Universidad Nacional del Nordeste Avda Libertad 5460, W3404AAS Corrientes, Argentina. (+54) 379-4424678 interno 4613 gortiz* at *unne edu ar
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