Home
Math symbols
Jokes
Forum
About us
Links
Contact us
Site map
Search The Site
   
   Program of Lessons
 
 Study Guide
 Topics of problems
 Tests & exams
www.bymath.com Study Guide - Arithmetic Study Guide - Algebra Study Guide - Geometry Study Guide - Trigonometry Study Guide - Functions & Graphs Study Guide - Principles of Analysis Study Guide - Sets Study Guide - Probability Study Guide - Analytic Geometry Select topic of problems Select test & exam Rules Price-list Registration

Constants and variables

Applying mathematics in studying of laws of nature and using them in technique, we meet with constants and variables. A variable is a value, which can be changed at the conditions of the considered problem; a constant cannot be changed at these conditions. The same value can be a constant for one problem and a variable for the other.

E x a m p l e .  An acceleration of a gravity is a constant  for the same  width of Earth, but it
                       changes depending on a width, i.e. in other words is a variable.

Variables are marked usually by the last letters of the Latin alphabet:  x,  y,  z, and constants by the first ones:  a,  b,  c, .

Back


| Home | About us | Links | Contact us |

Copyright 2002-2007 Dr. Yury Berengard.  All rights reserved.