simify

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June 12th 2012, 09:09 PM
zbest1966

simify

$\frac{1}{R}= \frac{1}{R1}+ \frac{1}{R2}$

Find R1
June 12th 2012, 09:20 PM
richard1234

Re: simify

Subtract 1/R2 from both sides, simplify:

$\frac{1}{R1} = \frac{1}{R} - \frac{1}{R2} = \frac{R2 - R}{R(R2)}$

Reciprocate:

$R1 = \frac{R(R2)}{R2 - R}$

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