Odpowiedzi

2010-01-19T16:17:54+01:00
R=R1•R2/R1+R2 /•(R1+R2)
R(R1+R2)=R1•R2
R•R1+R•R2=R1•R2
R•R2=R1•R2-R•R1
R•R2=R1(R2-R) /:(R2-R)
R•R2/R2-R=R1

Odp. R1=R•R2/R2-R
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