Mathematics, 10.03.2020 17:10 dlr1628
When an electric current passes through two resistors with resistance r1 and r2, connected in parallel, the combined resistance, R, can be calculated from the equation 1R=1r1+1r2, where R, r1, and r2 are positive. Assume that r2 is constant.
(a) Show that R is an increasing function of r1.
(b) Where on the interval a≤r1≤b does R take its maximum value?
Answers: 1
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