Los dados cargados también son conocidos como dados trucados. Al alterar ligeramente la distribución del peso de un dado, podrás hacer que caiga más veces en el lado de tu elección.
How much do you know about the world? Hans Rosling, with his famous charts of global population, health and income data (and an extra-extra-long pointer), demonstrates that you have a high statistical chance of being quite wrong about what you think you know. Play along with his audience quiz - then, from Hans' son Ola, learn 4 ways to quickly get less ignorant.
Subtítulos en español.
One deck. Fifty-two cards. How many arrangements? Let's put it this way: Any time you pick up a well shuffled deck, you are almost certainly holding an arrangement of cards that has never before existed and might not exist again. Yannay Khaikin explains how factorials allow us to pinpoint the exact (very large) number of permutations in a standard deck of cards.
View full lesson:
http://ed.ted.com/lessons/how-many-ways-can-you-arrange-a-deck-of-cards-yannay-khaikin
Subtítulos en español.
You'd have a hard time finding the medieval city Königsberg on any modern maps, but one particular quirk in its geography has made it one of the most famous cities in mathematics. Dan Van der Vieren explains how grappling with Königsberg's puzzling seven bridges led famous mathematician Leonhard Euler to invent a new field of mathematics.
View full lesson:
http://ed.ted.com/lessons/how-the-konigsberg-bridge-problem-changed-mathematics-dan-van-der-vieren
English subtitles.
Un sitio muy útil para estos tiempos en que cuando necesitas papel normalmente lo coges de la impresora o fotocopiadora. Muchas opciones. Útil con geoplano.
Resolveremos varios logaritmos, utilizando su definición o convirtiéndolos en ecuación exponencial. Utilizaremos también algunas propiedades de los logaritmos.
1, 2, 3, 4, 5, 6, 7, 8, 9... and 0. With just these ten symbols, we can write any rational number imaginable. But why these particular symbols? Why ten of them? And why do we arrange them the way we do? Alessandra King gives a brief history of numerical systems.
View full lesson: http://ed.ted.com/lessons/a-brief-history-of-numerical-systems-alessandra-king
English subtitles.
What are logarithms and why are they useful? Get the basics on these critical mathematical functions -- and discover why smart use of logarithms can determine whether your eyes turn red at the swimming pool this summer.
View full lesson:
http://ed.ted.com/lessons/steve-kelly-logarithms-explained
Subtítulos en español.
Without math, would our seafaring ancestors ever have seen the world? Great mathematical thinkers and their revolutionary discoveries have an incredible story. Explore the beginnings of logarithms through the history of navigation, adventure and new worlds.
View full lesson:
http://ed.ted.com/lessons/how-does-math-guide-our-ships-at-sea-george-christoph
Subtítulos en español.
Without math, would our seafaring ancestors ever have seen the world? Great mathematical thinkers and their revolutionary discoveries have an incredible story. Explore the beginnings of logarithms through the history of navigation, adventure and new worlds.
View full lesson:
http://ed.ted.com/lessons/how-does-math-guide-our-ships-at-sea-george-christoph
Subtítulos en español.
How high can you count on your fingers? It seems like a question with an obvious answer. After all, most of us have ten fingers -- or to be more precise, eight fingers and two thumbs. This gives us a total of ten digits on our two hands, which we use to count to ten. But is that really as high as we can go? James Tanton investigates.
View full lesson:
https://ed.ted.com/lessons/how-high-can-you-count-on-your-fingers-spoiler-much-higher-than-10-james-tanton
Subtítulos en español.
Esta es la escena de la película "Malditos bastardos" que se menciona:
https://youtu.be/QmFDpiBOiTc
A simple vista no parece un problema matemático, ¡pero lo es! ¿Se puede colorear un mapa con cuatro colores distintos de tal manera que dos regiones adyacentes no tengan el mismo color? Vamos a salir de dudas con el famoso "Teorema de los cuatro colores".
Vídeo de Eduardo Sáenz de Cabezón.
Tutorial que explica la definición de logaritmo y realiza el cálculo de algunos logaritmos exactos (resultado racional) para comprender el significado de esta operación matemática.
- Inicio a 06:40: Introducción a los logaritmos.
- 06:40 a 09:18: Definición de Logaritmo. Explicación.
- 09:18 a 15:52: Ejercicios con Logaritmos (I).
+ 14:40: Logaritmo no exacto.
- 15:52 a Fin: Ejercicios de Logaritmos (II).
Vídeo de Álvaro Reverte.