Learn every theory by seeing it.
Five chapters, 40+ interactive labs, every past-paper question solved step by step. Drag sliders, press play, flip cards and reveal one step at a time. Tick "I understand this topic" as you go, and your progress is saved in this browser.
1 · Laplace Transform
Turn ODEs into algebra. Shifts, steps, the Dirac delta, convolution, circuits and spring systems.
2 · Fourier Series
Build any wave from sines and cosines. Watch the Gibbs overshoot. Use Parseval to sum π²/6.
3 · Partial Differential Equations
Classify by \(B^2-4AC\), separate variables, then animate heat flow, plates and strings.
4 · Series Solutions and Frobenius
Engines that solve any listed equation with exact fractions, plus Bessel and Legendre functions.
5 · Fourier Transform
Series become continuous spectra. Transform pairs, properties, and solving PDEs on infinite domains.
Past papers, fully solved
2023, 2024 and 2025 finals: every part, step by step, with a topic heat map of where the marks come from.
🗺 Suggested study path
tools for everything
needed for PDEs
uses 1 and 2
stand-alone, 25 marks
extends 2
timed practice