Lecture 16 : Section ( 4-1 ) : General Solution of Homogeneous Linear Differential Equation Theorem : ( Existence of Unique Solution )-part 1

Lecture 18 : Section 4-1 linear dependent and linear independent- part 3

Lecture 19 : Section 4-1: Wronskian - part 4

Lecture 20 :Section ( 4 – 2 ) (1) Reduction of order method (2) Formula

Complete Lecture 20 :Section ( 4 – 2 ) (1) Reduction of order method (2) Formula

Lecture 21 :Section (4-3) : Homogeneous linear DE with constant coefficients

Lecture 22 :Section 4-4 : Cauchy Euler Differentioal Equation

Complete Lecture 22 :Section 4-4 : Cauchy Euler Differentioal Equation

Lecture 23:Section ( 4 – 5 ) : General Solution of Non homogeneous linear differential equation ( constant coefficients ) Undetermined coefficient

Lecture 24:Section ( 4 – 5 ) : General Solution of Non homogeneous linear differential equation ( constant coefficients ) Undetermined coefficient

Lecture 25:Section ( 4 – 5 ) : General Solution of Non homogeneous linear differential equation ( constant coefficients ) Undetermined coefficient

Lecture 26:Second :- Variation of Parameters

Lecture 27:Variation of Parameters

مراجعة شابتر 4 (هامة جدا ) الجزء الأول

مراجعة شابتر 4 (هامة جدا ) الجزء الثاني