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  • 09-09-2017
  • Mathematics
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Solve 1/r =1/r1+1/r2 for R

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Аноним Аноним
  • 09-09-2017
1/r  = r2 + r1
         ---------
           r1r2

r  =   r1r2
     -----------
     r2 + r1
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