Question: Is R an increasing or decreasing function of r? When an electric current passes through two resistors with resistance r and s, connected in parallel,

When an electric current passes through two resistors with resistance r and

 Is R an increasing or decreasing function of r?

When an electric current passes through two resistors with resistance r and s, connected in parallel, the combined resistance, R. can be calculated from the equation: where R, r, and s are positive. Assume that s is constant. Find dr

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