Summaries & podcasts
Study sheets, summaries and mind maps built from your notes. And with Pro, a two-voice podcast to revise on the go.
Arithmetic sequences
uₙ = u₀ + n × r
Podcast · 2 voicesPRO
Interactive example
The sheet for the night before, the map for the structure, the podcast when your hands are busy.
Each term is the previous one plus the same number r, called the common difference.
General term: uₙ = u₀ + n × r.
To show a sequence is arithmetic, work out uₙ₊₁ − uₙ: if the result doesn't depend on n, you're done.
Don't mix it up with a geometric sequence, where you always multiply by the same number.
The essentials of the chapter: definitions, formulas, methods, traps to avoid.
Ideas and how they connect, at a glance. You can export it as an image.
A teacher and a student discuss your chapter, in two voices: perfect for the bus.
Everything comes from what you imported, not from a sheet found online.
The mind map shows how ideas fit together: handy for an essay plan or a presentation.
Export your mind map as an image to keep it or share it.
Each chapter has its resources: study sheet, flashcards, mind map and podcast.
A two-voice audio discussion, a teacher and a student, about your chapter, generated by AI. It's Pro only and lives in the resources of each study path chapter.
Yes, as an image, to keep it or share it.
One study sheet, summary or study plan a day. Mind maps count towards your 5 activities a day. Pro removes these limits.
On iPhone, and on the web with the same account. Start on your laptop, finish on the bus.
Android: coming soon to Google Play
