Set a timer for 20 minutes per problem. If you cannot solve it, check the answer key (odd numbers) or the example that most resembles the problem. Do not stare blankly – move to the next problem and return later.

Unlike theoretical texts that treat differential equations as pure math, Marcus constantly asks: ¿Para qué sirve esto? (What is this for?). He includes:

Si estás cursando matemáticas avanzadas, es muy probable que te hayas topado con el nombre de . Su libro, Differential Equations: An Introduction

: Reviewers often highlight Marcus's "newly-minted" approach to explaining difficult concepts with visual and narrative depth. Where to Find It