Question: A mass balance for a pollutant in a well-mixed lake can be written as V dc/dt W Qc - kVc. Given the parameter

A mass balance for a pollutant in a well-mixed lake can be written as V dc/dt – W – Qc - kV√c. Given the parameter values V = 1 x 10⁶m³, Q = 1 x 10⁵ m³/yr, W = l x 10⁶ g/yr, and k = 0.25 m^0.5/g^0.5/yr, use the modified secant method to solve for the steady-state concentration. Employ an initial guess of c = 4 g/m³ and δ = 0.5. Perform three iterations and determine the percent relative error after the third iteration.

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