MATH2121 Theory and Applications of Differential Equations (UNSW Sydney): rated 2.9/5 overall across 31 reviews collected on UNSW Wall.
MATH2121 is a UNSW Sydney course taught by the Faculty of Science in School of Mathematics & Statistics. This page brings together its handbook details and what UNSW students say about it.
Review data updated 2026-10-24.
Chinese title: 微分方程理论与应用
Type: Undergraduate course
Credit points: 6
Subject area: School of Mathematics & Statistics
Faculty: Faculty of Science
Level: Undergraduate Level 2
Handbook year: 2026
This course builds on elementary knowledge of differential equations (taught in MATH1231 at UNSW) to provide further theory and methods for solving ordinary differential equations and partial differential equations with illustrative applications in physics, engineering, and biology. The specific topics for ordinary differential equations include: first order, linear second order, variation of parameters, dynamical systems, power series representations and Frobenius method,…
MATH2121 has 31 scored reviews: overall 2.9/5 · usefulness 2.3 (all out of 5; higher difficulty means harder).
Sources: 3 StudentVIP reviews (average 2.3 stars); 28 Reddit comments that an AI model judged to be reviewing this course (average would-recommend 2.9/5).
On Reddit: "Definitely not just you. Dr Atnip was a lot clearer in explaining his reasoning. I feel like Dr. Cai seems to read from her notes and then just copy those answers onto the slides. She doesn't explain why we're doing a certain thing or that we're using the theorem from a few slid…"
On Reddit: "she answered that correctly. MATH2121 is comparatively very easy to other second year maths courses, however its probably hard compared to first year maths courses."
The course panel on UNSW Wall shows every review and discussion in full.
Q: Is MATH2121 worth taking?
A: Averaged over 31 reviews: usefulness 2.3/5, overall 2.9/5.
Q: Which faculty teaches MATH2121, and when is it offered?
A: MATH2121 is taught by the Faculty of Science. Check the official handbook for the current year.
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