Venant Niyonkuru2025-07-112025-07-112023-05https://ir-library.ku.ac.ke/handle/123456789/30353A project submitted in partial fulfillment of the requirements for the degree of Master of Science in applied mathematics at the school of pure and applied sciences of Kenyatta university. May 29, 2023 Supervisions: Dr. Winfred Mutuku Prof. Ali MoussaouienThesis