A posynomial, also known as a posinomial in some literature, is a function of the form where all the coordinates and coefficients are positive real numbers, and the exponents are real numbers. Posynomials are closed under addition, multiplication, and nonnegative scaling. For example, is a posynomial. Posynomials are not the same as polynomials in several independent variables. A polynomial's exponents must be non-negative integers, but its independent variables and coefficients can be arbitrary real numbers; on the other hand, a posynomial's exponents can be arbitrary real numbers, but its independent variables and coefficients must be positive real numbers. This terminology was introduced by Richard J. Duffin, Elmor L. Peterson, and Clarence Zener in their seminal book on geometric programming. Posynomials are a special case of signomials, the latter not having the restriction that the be positive. (Wikipedia).
Professor Poliakoff on a word that sounds familiar. This is the first in our new Chem Definition series - short videos about the language and jargon of chemistry.
From playlist Chem Definition - Periodic Videos
Polymorphs can be a headache for people who make pharmaceuticals. Find out why? More chemistry at http://www.periodicvideos.com/
From playlist Chem Definition - Periodic Videos
Using Sympy to solve algebraic expressions and equations.
From playlist Introduction to Pyhton for mathematical programming
What Are Allotropes of Metalloids and Metals | Properties of Matter | Chemistry | FuseSchool
What Are Allotropes of Metalloids and Metals Learn the basics about allotropes of metalloids and metals, as a part of the overall properties of matter topic. An allotrope is basically a different form of the same element, each with distinct physical and chemical properties. For example
From playlist CHEMISTRY
Dealing with limits in Sympy.
From playlist Introduction to Pyhton for mathematical programming
102 Printing mathematical symbols in Sympy
How to output your mathematical code using an in built Sympy printer.
From playlist Introduction to Pyhton for mathematical programming
Introduction to Parametric Equations
This video defines a parametric equations and shows how to graph a parametric equation by hand. http://mathispower4u.yolasite.com/
From playlist Parametric Equations
Synthesis of a Bromoalkane (n-Bromopropane)
In this video, I will be making n-bromopropane by brominating 1-propanol. The n-bromopropane can then be used in a Grignard reaction to make butyric acid (smell of vomit). Here is the video of me using it in a Grignard reaction: http://youtu.be/_wmx65zQk58 This process can be used as a
From playlist Syntheses and Demonstrations
Two Properties of Logarithms: Without Words
Link: https://www.geogebra.org/m/puEbQtBY
From playlist PreCalculus: Dynamic Interactives!
Lecture 6 | Convex Optimization I (Stanford)
Professor Stephen Boyd, of the Stanford University Electrical Engineering department, continues his lecture on convex optimization problems for the course, Convex Optimization I (EE 364A). Convex Optimization I concentrates on recognizing and solving convex optimization problems that ar
From playlist Lecture Collection | Convex Optimization