When two resistors are connected in parallel, the total resistance, R(t), is given by 1 1 1 R(t) R₁(t) R₂(t)' where R₁ (t) and R₂ (t) are the resistances of each individual resistor. + (1) (a) Use implicit differentiation, or otherwise, to differentiate Equation (1) to give an ex- dR pression for in terms of R₁ and R₂ and their derivatives. dt

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