Intro To Solving Systems of First Order Differential Equations
An attempt at an intuitive derivation
Variation of Parameters Using Linear Algebra
linear is best frend :)
Solving Second Order Systems of Differential Equations
ye
Tricks for Remembering Laplace Transforms
for students and people who forgot
Skipping Integration by Parts Using Euler's Formula
skip or simplify integrals involving trig functions multiplied by exponentials