Skip to content
πŸ”₯ Use WELCOME20 for 20% off your first chapter🎬 Limits & Derivatives: Part 1 is free to watchπŸ“ž 1:1 mentorship call with Karan β€” just β‚Ή300πŸ”₯ Use WELCOME20 for 20% off your first chapter🎬 Limits & Derivatives: Part 1 is free to watchπŸ“ž 1:1 mentorship call with Karan β€” just β‚Ή300πŸ”₯ Use WELCOME20 for 20% off your first chapter🎬 Limits & Derivatives: Part 1 is free to watchπŸ“ž 1:1 mentorship call with Karan β€” just β‚Ή300πŸ”₯ Use WELCOME20 for 20% off your first chapter🎬 Limits & Derivatives: Part 1 is free to watchπŸ“ž 1:1 mentorship call with Karan β€” just β‚Ή300πŸ”₯ Use WELCOME20 for 20% off your first chapter🎬 Limits & Derivatives: Part 1 is free to watchπŸ“ž 1:1 mentorship call with Karan β€” just β‚Ή300πŸ”₯ Use WELCOME20 for 20% off your first chapter🎬 Limits & Derivatives: Part 1 is free to watchπŸ“ž 1:1 mentorship call with Karan β€” just β‚Ή300πŸ”₯ Use WELCOME20 for 20% off your first chapter🎬 Limits & Derivatives: Part 1 is free to watchπŸ“ž 1:1 mentorship call with Karan β€” just β‚Ή300πŸ”₯ Use WELCOME20 for 20% off your first chapter🎬 Limits & Derivatives: Part 1 is free to watchπŸ“ž 1:1 mentorship call with Karan β€” just β‚Ή300

Welcome to Mathflex

Why we built a chapter-wise way to learn JEE maths, and what's coming next.

Karan Mittal Β· IIT Delhi alumnus
1 Aug 2026 Β· 3 min read

Mathflex started with a simple idea: pay for the chapter you're stuck on, not the whole syllabus.

#Mathflex
Written by
Karan Mittal

Karan bhaiya is an IIT Delhi alumnus (B.Tech, Civil Engineering, 2023). After cracking JEE himself, he has mentored 1,000+ students and has worked as a project manager building products. At Mathflex, he teaches JEE maths chapter by chapter, the way he wishes he had learned it.

Book a 1:1 call

Keep reading

All articles β†’
Exam preparation2 Oct 20269 min readYour 100-day JEE Main plan, chapter by chapterWhich chapters to finish first, when to start mocks and how to fit revision around school.Chapter guides26 Sept 20267 min readDefinite Integrals: the properties that solve most JEE questionsKing's rule, periodicity and the rest, with the kind of PYQs where each one shows up.Study tips19 Sept 20265 min readHow to review a mock test in 30 minutesA simple three-column method to turn every wrong answer into marks next time.