change of variable

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• Change of variables (PDE) — Topics in Calculus Fundamental theorem Limits of functions Continuity Mean value theorem Differential calculus  Derivative Change of variables Implicit differentiation Taylor s theorem Related rates …   Wikipedia

• variable — variability, variableness, n. variably, adv. /vair ee euh beuhl/, adj. 1. apt or liable to vary or change; changeable: variable weather; variable moods. 2. capable of being varied or changed; alterable: a variable time limit for completion of a… …   Universalium

• Variable gauge axles — (VGA) are axles that allow railway vehicles to pass from tracks of one rail gauge to a different gauge. Variable gauge axles are used to allow the running of trains between Spain and France, Europe and Russia, Kazakhstan and China, and Mongolia… …   Wikipedia

• variable — [ varjabl ] adj. et n. • fin XII e; lat. variabilis 1 ♦ Qui est susceptible de se modifier, de changer souvent au cours d une durée. ⇒ changeant, 1. incertain, instable. Temps variable. N. m. Météor. L aiguille du baromètre est au variable, sur… …   Encyclopédie Universelle

• Variable bitrate — (VBR) is a term used in telecommunications and computing that relates to the bitrate used in sound or video encoding. As opposed to constant bitrate (CBR), VBR files vary the amount of output data per time segment. VBR allows a higher bitrate… …   Wikipedia

• Variable aleatoire — Variable aléatoire réelle Un exemple de variable aléatoire : la fonction qui associe au résultat du jet de deux dés la somme de leurs valeurs Une variable aléatoire réelle est une variable aléatoire à valeurs dans , ou une partie de …   Wikipédia en Français

• Variable valve timing — Variable valve timing, or VVT, is a generic term for an automobile piston engine technology. VVT allows the lift or duration or timing (some or all) of the intake or exhaust valves (or both) to be changed while the engine is in operation. Two… …   Wikipedia

• Variable displacement — is an automobile engine technology that allows the engine displacement to change, usually by deactivating cylinders, for improved fuel economy. The technology is primarily used in large, multi cylinder engines. Many automobile manufacturers have… …   Wikipedia

• Variable valve actuation — Variable Valve Actuation, or VVA, is a generalised term used to describe any mechanism or method that can alter the shape or timing of a valve lift event within an internal combustion engine. There are many ways in which this can be achieved,… …   Wikipedia

• Variable — Va ri*a*ble, a. [L. variabilis: cf. F. variable.] [1913 Webster] 1. Having the capacity of varying or changing; capable of alternation in any manner; changeable; as, variable winds or seasons; a variable quantity. [1913 Webster] 2. Liable to… …   The Collaborative International Dictionary of English

• Variable exhaust — Variable Va ri*a*ble, a. [L. variabilis: cf. F. variable.] [1913 Webster] 1. Having the capacity of varying or changing; capable of alternation in any manner; changeable; as, variable winds or seasons; a variable quantity. [1913 Webster] 2.… …   The Collaborative International Dictionary of English