Life & fun · December 10, 2025
Calculus done right
Calculus 1 – differential calculus — a rigorous introduction
Calculus done right launched on December 10, 2025.
What it does
A mathematically honest introduction to differential calculus in the spirit of rigorous mathematics courses. Work in progress—content updated frequently. Part of a planned sequence covering core undergraduate mathematics.
Rigorous undergraduate mathematics with theory, step-by-step computation, 3D visualization, and adaptive practice across calculus, linear algebra, and beyond.
Theory written with the structure and rigor of upper-division courses, made accessible to undergraduates. Paired with step-by-step computation, interactive 3D visualization, and adaptive practice across calculus, linear algebra, and beyond. Limits, continuity, differentiation, and the foundations of analysis. Vector spaces, linear maps, eigenvalues, inner products, and the spectral theorem. Topology, manifolds, vector fields, and the integral theorems of Green, Stokes, and Gauss. Adaptive practice that adjusts to your level with instant feedback, progression tracking, and timed modes. Step-by-step symbolic computation with a 3D function plotter for derivatives, integrals, eigenvalues, and…from math-website.pages.dev
Does a similar job
all alternatives →- DEDifferential Equations Explained2015 · lewis500.github.io · ▲171
- AIAn Interactive Guide to Teach Derivatives and Backpropagation2023 · x0axz.com · ▲119
MathLingua – A Structured Language of Mathematics2021 · mathlingua.org · ▲97- PWProgramming with Pure Lambda Calculus2023 · bruijn.marvinborner.de · ▲61
Functional programming language based on pure de Bruijn indexed lambda calculus.
Calculus short revision notes2021 · play.google.com · ▲2Short calculus revision notes to grasp important points
More life & fun this month
the category →
A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.
Life & fun · 2d ago · permit.petercai.com
- IV
Life & fun · 14d ago · tanzaniaeducationproject.org
Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.
Life & fun · 15d ago · bigwords.page
Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.
Life & fun · 9d ago · guitoro.com
Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.
Life & fun · 13d ago · carrierexplode.com
Life & fun · 23d ago · space.bl2.net
Source: Product Hunt launch ↗
Launched alongside, December 2025
the whole month →- GP
Life & fun · Dec 2025 · dosaygo-studio.github.io
Hi everyone! My name's Luke and I made the original Jmail here alongside Riley Walz. We had a ton of friends collaborate on building out more of the app suite last night in lieue of DOJ's "Epstein files" release. Please AMA!
Life & fun · Dec 2025 · jmail.world
PlanEat AI▲733AI turns your health goals into a 7-day menu & grocery list
AI · Dec 2025 · planeatai.com
Community, All the HN belong to you. This is an archive of hacker news that fits in your browser. When I made HN Made of Primes I realized I could probably do this offline sqlite/wasm thing with the whole GBs of archive. The whole dataset. So I tried it, and this is it. Have Hacker News on your device. Go to this repo (https://github.com/DOSAYGO-STUDIO/HackerBook): you can download it. Big Query -> ETL -> npx serve docs - that's it. 20 years of HN arguments and beauty, can be yours forever. So they'll never die. Ever. It's the unkillable static archive of HN and it's…
Dev tools · Dec 2025 · hackerbook.dosaygo.com
