Ответы на вопрос:
дано
i1 i2 r1 r2
найти
iкз
решение
е = i1*(r+r1)
е = i2*(r+r2)
i1*(r+r1) = i2*(r+r2)
i1*r+i1*r1 = i2*r+i2*r2
i1*r - i2*r = i2*r2 - i1*r1
r (i1-i2) = i2*r2 - i1*r1
r = (i2*r2 - i1*r1) / (i1-i2)
e = i1*(r+r1) = i1*( (i2*r2 - i1*r1) / (i1-i2)+r1)
iкз = e / r = i1*( (i2*r2 - i1*r1) / (i1-i2)+r1) / (i2*r2 - i1*r1) / (i1-i2) =
=i1*(i1-i2)( (i2*r2 - i1*r1) / [ (i1-i2)+r1)(i2*r2 - i1*r1) ]
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