In this video I present a cool way of doing undetermined coefficients, which is the way I learnt it in high school. It generalizes easily for higher-order eq...

For a better reason, see the pinned comment by Fematika.

e*pi is irrational ? Proof via complex number by a 14 year old subscriber, Ron.


blackpenredpen,
math for fun,

Mathematical Methods and Modeling of Biophysical Phenomena - Opening Ceremony IMPA, Rio de Janeiro, November 30th to December 5th, 2017 Opening Ceremony This...

Mathematical Methods and Modeling of Biophysical Phenomena - Jean Clairambault Jean Clairambault (INRIA - UPMC) This is part of a series of workshops organiz...

Mathematical Methods and Modeling of Biophysical Phenomena - Fabio Chalub Fabio Chalub (Universidade Nova de Lisboa) This is part of a series of workshops or...

Mathematical Methods and Modeling of Biophysical Phenomena - Chiara Mocenni Chiara Mocenni (Università di Siena) This is part of a series of workshops organi...

In this video I show that the interval (0,1) has the same cardinality as R, which is really surprising because (0,1) is a much smaller subset of R. At the sa...

Mathematical Methods and Modeling of Biophysical Phenomena - Max O. de Souza Max O. de Souza (UFF) This is part of a series of workshops organized by IMPA ai...

Mathematical Methods and Modeling of Biophysical Phenomena - Alberto Pinto Alberto Pinto (Universidade do Porto) This is part of a series of workshops organi...

Calculus without Calculus,
Find the minimal value of x+5/x, where x is bigger than 0,
Find the minimal value of ax+b/x, where x is bigger than 0,
Calculus 1 min/max problem,
Find the minimal value of a function,


www.blackpenredpen.com,
math for fun,

Mathematical Methods and Modeling of Biophysical Phenomena - Jan Haskovec

Jan Haskovec
(KAUST - Saudi Arabia)

This is part of a series of workshops organized by IMPA aiming at bringing together a multidisciplinary group of scientists to study problems in…

Mathematical Methods and Modeling of Biophysical Phenomena - Liliam Medeiros Liliam Medeiros (UNESP) This is part of a series of workshops organized by IMPA ...

Mathematical Methods and Modeling of Biophysical Phenomena - Nicolas Vauchelet Nicolas Vauchelet (Universitè Paris XIII) This is part of a series of workshop...

Mathematical Methods and Modeling of Biophysical Phenomena - Alexandre Ferreira Ramos

Alexandre Ferreira Ramos
(USP – EACH)

This is part of a series of workshops organized by IMPA aiming at bringing together a multidisciplinary group of scientists to study…

Mathematical Methods and Modeling of Biophysical Phenomena - Nuno Miguel Peregrino

Nuno Miguel Peregrino
(UFF)

This is part of a series of workshops organized by IMPA aiming at bringing together a multidisciplinary group of scientists to study problems…