Support Numerical Methods
This wiki is free, has no ads, and will stay that way for as long as possible. All the content — theory, complete derivations and verified exercises — is open to anyone who needs it.
What your support goes to
- Writing new guides, derivations and solved exercises, with every number verified.
- Keeping the three languages at the same depth: every page is written in Spanish, Basque and English.
- Covering domain and publishing costs so the site stays free and ad-free.
What your support unlocks
Support doesn't just maintain what exists: it decides what gets built first. These are the next improvements on the list; if you support the project, tell us which one would make your life easier.
Printable PDF formula sheet
Each topic as a print-ready formula sheet you can carry: formulas, errors and conditions of use on one or two pages.
Print-friendly version of every article
Careful print styles so guides, derivations and exercises come out perfectly on paper or as a browser-generated PDF.
Downloadable exercise packs
Exercise bundles by topic, statements first and detailed solutions after, so you can practise without peeking at the answer.
Interactive figures
Drag the step and watch the error change, draw stability regions or the Runge phenomenon live, on the same figures the articles use.
Step-by-step calculators
Enter your data and see the divided-difference table, Newton iterations or one RK4 step built exactly like in the solved exercises.
New topics
Growing the bible beyond the current syllabus: least squares, eigenvalues, optimization and partial differential equations.
Other ways to help
- Share the site with anyone studying numerical methods.
- If you find a typo or a number that doesn't check out, write to us — every correction improves the reference.
- Suggest topics or exercises you'd like to see solved.