Dorin
Алексей
Ответ. J1/J2=R2/R1; J2/J3=R3/R2; J1=J2*(R2/R1); J3=J2*(R2/R3); J=J1+J2+J3; J1=J2*(2/3);
J3=J2*(2/4); J2*(1+2/3+1/2)=6; J2*(13/6)=6; J2=36/13; J1=(2/3)*(36/13)=24/13; J3=(1/2)*(36/13)=18/13;
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