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Od štetja do odprtih težav. Izberite, kje ste; vsaka lekcija pokaže svoje korake, risa sliko, in skriva odgovor, dokler ne vprašate.

1765 učne izkušnje · 51769 težave pri praksi · 28 faze

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  1. 30 Frontiers 24 učne izkušnje

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Napišite ali ga narisati z miško ali prstom. Enakovanje, derivati, matrice, trikotniki, prvotne – ali besedni problem, ki ga tutor razbije na dele.

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Kaj brezplačni račun doda: vaš delovni knjiga

  • Opombe o vsaki lekciji, prihranjene med tipkanjem
  • Zapis izukov, ki ste jih končali, in kje naj se poberete
  • Vsak problem, ki ga rešiš, ki ga hraniš na enem mestu.
  • Na vsakem pouku je učna plošča za vprašanja o tej strani
  • Napotitev in odziv na odbor za pomoč

Vsaka lekcija, delovni zgled in reševalec ostane odprt brez računa.

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Kaj zajema vsaka faza

Vsaka je nabor lekcij z živo obdelanim zgledom, vizualnim in reševalcem, ki so ga nastavili.

Faza 1 · school Arithmetic Numbers, fractions, percentages and the order of operations. Faza 2 · school Algebra Equations, inequalities, factoring, functions and systems. Faza 3 · school Geometry Triangles, circles, polygons, solids and coordinates. Faza 4 · school Trigonometry Angles, the unit circle, identities and trig equations. Faza 5 · school Precalculus Functions in depth, complex numbers, sequences, conics and vectors. Faza 6 · school Statistics & Probability Averages, spread, counting and probability. Faza 7 · school Discrete Math & Logic Counting, logic, truth tables, sets and proof. Faza 8 · college Calculus Limits, derivatives, integrals, series and optimisation. Faza 9 · college Linear Algebra Matrices, determinants, inverses, row reduction and eigenvalues. Faza 10 · college Number Theory Primes, divisibility, gcd, modular arithmetic and sequences. Faza 11 · college Differential Equations Equations whose unknown is a function: growth, oscillation, and how physics is written. Faza 12 · college Multivariable Calculus Partial derivatives, gradients, multiple integrals, vector fields. Faza 13 · college Real Analysis Limits made rigorous: sequences, series, convergence, improper integrals, complex numbers as functions. Faza 14 · college Combinatorics & Graph Theory Counting, generating functions, graphs, trees, colourings and networks. Faza 15 · college Set Theory & Logic Sets, relations, functions, cardinality, proof and the foundations of mathematics. Faza 16 · college Abstract Algebra Groups, rings, fields: symmetry made into structure. Faza 17 · college Probability Theory Random variables, distributions, expectation, limit theorems. Faza 18 · college Numerical Methods Root finding, approximation, numerical integration and error. Faza 19 · college Complex Analysis Holomorphic functions, contour integrals, residues, the rigidity of the complex plane. Faza 20 · graduate Topology Open sets, continuity, compactness, connectedness: geometry without distance. Faza 21 · graduate Measure Theory Lebesgue measure and integral, σ-algebras, convergence theorems. Faza 22 · graduate Functional Analysis Banach and Hilbert spaces, operators, spectral theory. Faza 23 · graduate Differential Geometry Curves, surfaces, curvature, manifolds: the language of general relativity. Faza 24 · graduate Algebraic Topology Fundamental groups, homology: counting holes with algebra. Faza 25 · graduate Category Theory Objects, arrows, functors, universal properties: mathematics about mathematics. Faza 26 · graduate Partial Differential Equations Heat, waves, potentials and transport: Fourier methods, energy estimates, Sobolev spaces and scaling. Faza 27 · graduate Fluid Dynamics Continuity, vorticity, the Euler and Navier-Stokes equations, and what is proved about them. Faza 30 · research Frontiers The open problems (Riemann, Navier-Stokes, P vs NP) broken into what you need to even read them.

Kako deluje

1

Napišite ali narišite

»Derivativ x2 sin x«, »je 561 prim«, »triangle 3 4 5« – ali skicirati enačbo na podplatu in je bere za vas.

2

Pazi na vsako potezo.

Eno pravilo na korak (pravilo izdelka, operacija vrstice, Euclid division) animirano in pojasnjeno v stavku.

3

Glejte obliko tega

Krive z označenimi koreninami, površine lahko vrtite, trikotniki, ki jih vlečemo na skalo, faktorji, matrice kot vektorje v prostoru.

4

Tudi nemogoče.

Besedni problem, dokaz, odprto vprašanje: učitelj ga razdeli na dele, ki jih lahko napadete, vam pove, kaj je znano, in skriva rešitev, dokler si jo želite.