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Ex 1 va rog. Multumesc anticipat

Ex 1 Va Rog Multumesc Anticipat class=

Răspuns :

Amplifici   fractia    cu   1-i.

z=(1-i)/(1+i)*(1-i)=(1-i)/(1-i²)=

(1-i)/(1-(-1)=(1-i)/(1+1)=

(1-i)/2=1/2-i/2=1/2-(1/2)*i