Odpowiedź :
R1,R2,R3,R4
1/Rz= 1/R1 + 1/R2 + 1/R3 + 1/R4 +
1/Rz= (R2*R3*R4)/(R1*R2*R3*R4) + (R1*R3*R4)/(R1*R2*R3*R4) +(R2*R1*R4)/(R1*R2*R3*R4) +(R2*R3*R1)/(R1*R2*R3*R4)
Rz=(R1*R2*R3*R4)/((R2*R3*R4)+(R1*R3*R4)+(R2*R1*R4)+(R2*R3*R1))
R1,R2,R3,R4
1/Rz= 1/R1 + 1/R2 + 1/R3 + 1/R4 +
1/Rz= (R2*R3*R4)/(R1*R2*R3*R4) + (R1*R3*R4)/(R1*R2*R3*R4) +(R2*R1*R4)/(R1*R2*R3*R4) +(R2*R3*R1)/(R1*R2*R3*R4)
Rz=(R1*R2*R3*R4)/((R2*R3*R4)+(R1*R3*R4)+(R2*R1*R4)+(R2*R3*R1))