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

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 sæt af lektioner med en live arbejdede eksempel, en visuel, og en løser tunet til 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 fungerer det?

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 træk

En regel pr trin ~ produktet regel, en række operation, en Euclid division ~ animeret, og forklaret i en sætning.

3

Se hvordan det ser ud

Kurve med deres rødder markeret, overflader kan du rotere, trekanter trukket til skala, faktor træer, matricer som vektorer i rummet.

4

De umulige også

Et ordproblem, et bevis, et åbent spørgsmål: Læreren bryder det ind i dele, du kan angribe, fortæller dig, hvad der er kendt, og skjuler løsningen, indtil du ønsker det.