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The combined resistance R of two resista...

The combined resistance R of two resistance `R_1 and R_2`, where `R_1, R_2 ge 0` is given by `(1/R) = (1/R_1) + (1/R_2)`. If `R_1 + R_2 =c` (where c is constant), show that the maximum resistance R is obtained by choosing `R_1 = R_2`

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CHETANA PUBLICATION-Applications of Derivatives-Exercise
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