If R is the total resistance of two resistors, connected in parallel, with resistances R₁ and R₂, then 1 1 1 + R R₁ R₂ = If the resistances are measured in ohms as R₁ = 100 and R₂ = 500, with a possible error of 0.005 ohms in each case, estimate the maximum error in the calculated value of R. ? (enter a fraction)
