Modified Differential Transform Method for Solving the Model of Pollution for a System of Lakes

Figure 2

Periodic input signal and absolute error (A.E.) of approximations. The time is expressed in years.

(a) Pollution for lake 1

(b) Pollution for lake 2

(c) Pollution for lake 3

(d) A.E. for pollution of lake 1

(e) A.E. for pollution of lake 2

(f) A.E. for pollution of lake 3