**TI82** TxtView file generated by CalcText - KouriI:CH9MATHS:8ے9)Les nombres complexesRe(z)=(z+conj (z))/2 im(z)=(z-conj(z))/2i z+z'=(a+a')+i(b+b') zz'=(aa'-bb')+i(ab'+a'b) 1/z=conj(Z)/(a²+b²) z*conjz=a²+b² Si Delta<0 Z1=(-b-iR²(Delta))/2a Z2=(-b+iR²(Delta))/2a z=cos alpha+i sin alpha e^(ialpha)=cos alpha+i sin alpha e^(i(alpha+Beta))=e^(ialpha)*e^(iBeta) Valeurs remarquables: e^(ipi/2)=i e^(ipi/4)=2/R²(2)+iR²(2)/2 e^(ipi/6)=R²3/2+i/2 e^(ipi/3)=iR²3/2+1/2 Mod(z)=OM arg(z)=(OI,OM) z=|z|e^(ialpha) Transformations: Translations:z'=z+b Homotetie:z'-w=k(z-w) rotation:z'-w=e^(iteta)(z-w) ےفھ