Learn all of maths, in order.

From counting to the open problems. Pick where you are; every lesson shows its steps, draws the picture, and hides the answer until you ask.

  1. 1 Arithmetic 4 lærdom
  2. 2 Algebra 11 lærdom
  3. 3 Geometry 6 lærdom
  4. 4 Trigonometry 4 lærdom
  5. 5 Precalculus 7 lærdom
  6. 6 Calculus 7 lærdom
  7. 7 Linear Algebra 5 lærdom
  8. 8 Statistics & Probability 15 lærdom
  9. 9 Discrete Math & Logic 2 lærdom
  10. 10 Number Theory 7 lærdom
  11. 11 Differential Equations 5 lærdom
  12. 12 Analysis 5 lærdom
  13. 13 Frontiers 6 lærdom

Or bring your own problem

Type it, or draw it with your mouse or finger. Equations, derivatives, matrices, triangles, primes — or a word problem the tutor breaks into parts.

What each stage covers

Hver enkelt er et sett med øvelser med et levende fungert eksempel, et visuelt, og en løser tunet for det.

Stage 1 Arithmetic Numbers, fractions, percentages and the order of operations. Stage 2 Algebra Equations, inequalities, factoring, functions and systems. Stage 3 Geometry Triangles, circles, polygons, solids and coordinates. Stage 4 Trigonometry Angles, the unit circle, identities and trig equations. Stage 5 Precalculus Functions in depth, complex numbers, sequences, conics and vectors. Stage 6 Calculus Limits, derivatives, integrals, series and optimisation. Stage 7 Linear Algebra Matrices, determinants, inverses, row reduction and eigenvalues. Stage 8 Statistics & Probability Averages, spread, counting and probability. Stage 9 Discrete Math & Logic Counting, logic, truth tables, sets and proof. Stage 10 Number Theory Primes, divisibility, gcd, modular arithmetic and sequences. Stage 11 Differential Equations Equations whose unknown is a function: growth, oscillation, and how physics is written. Stage 12 Analysis Limits made rigorous: sequences, series, convergence, improper integrals, complex numbers as functions. Stage 13 Frontiers The open problems — Riemann, Navier–Stokes, P vs NP — broken into what you need to even read them.

Hvordan det virker

1

Type it or draw it

“derivative of x² sin x”, “is 561 prime”, “triangle 3 4 5” — or sketch the equation on the pad and it is read for you.

2

Se hvert trekk

Én regel per trinn — produktregelen, en radoperasjon, en Euklid-avdeling — animert og forklart i en setning.

3

Se formen på det

Kurver med røttene markert, overflater du kan rotere, trekanter tegnet til skala, faktor tre, matriser som vektorer i rommet.

4

De umulige også

Et ordproblem, et bevis, et åpent spørsmål: veilederen bryter det i deler du kan angripe, forteller deg hva som er kjent, og skjuler løsningen til du vil ha det.