Matematika Proceedings of Mathematics Kurva Isoprofit Proceedings of Matematics (Birth Rate Prevented (Fourier Series (Surplus Konsumen - 515 Beda hingga Berpengaduk Birth Rate Prevented CSTR Capital Constant Elasticity of Substitution Consumer Surplus Cournot Model Deret Fourier Termodifikasi) Elasticity of Substitution Elastisitas Substitusi Finite Difference Follower Fourier Series Fourier Series Modified Fungsi Holling Fungsi Reaksi Fuzzy linear program Growth of Fertile Age Mates Growth of Fertile Age Mates) (Angka Kelahiran Tercegah Heat Transfer Holling function Isoprofit Curves Isoprofit curve Katakunci: Model Keseimbangan Kestabilan Keywords: Program dynamic Konduktivitas panas Konsentrasi Zat Kuhn-Tucker Labor Leader Logistic Growth Model Modal Model Model Cournot Model Pertumbuhan Logistik Model Predator Prey Model Stackelberg Modified Fourier Series ) (Deret Fourier