Search results
Results from the WOW.Com Content Network
The symbol was introduced originally in 1770 by Nicolas de Condorcet, who used it for a partial differential, and adopted for the partial derivative by Adrien-Marie Legendre in 1786. [3] It represents a specialized cursive type of the letter d , just as the integral sign originates as a specialized type of a long s (first used in print by ...
It can be thought of as the rate of change of the function in the -direction.. Sometimes, for = (,, …), the partial derivative of with respect to is denoted as . Since a partial derivative generally has the same arguments as the original function, its functional dependence is sometimes explicitly signified by the notation, such as in:
Partial derivatives are generally distinguished from ordinary derivatives by replacing the differential operator d with a "∂" symbol. For example, we can indicate the partial derivative of f ( x , y , z ) with respect to x , but not to y or z in several ways:
Arrow (symbol) Chevron (insignia) ∆ (disambiguation) D, d; Д, д ẟ – Latin delta; ∂ – the partial derivative symbol, a curved d, sometimes mistaken for a lowercase Greek letter Delta. ð – the small eth appears similar to a small delta and also represents a d sound in some contexts; Th (digraph) Thorn (letter)
Partial derivative, derivative with respect to one of several variables of a function, with the other variables held constant ∂, a symbol that can denote a partial derivative, sometimes pronounced "partial dee" Partial differential equation, a differential equation that contains unknown multivariable functions and their partial derivatives
Here ∂ is a rounded d called the partial derivative symbol. To distinguish it from the letter d, ∂ is sometimes pronounced "der", "del", ...
For most symbols, the entry name is the corresponding Unicode symbol. So, for searching the entry of a symbol, it suffices to type or copy the Unicode symbol into the search textbox. Similarly, when possible, the entry name of a symbol is also an anchor, which allows linking easily from another Wikipedia article. When an entry name contains ...
Symbol Name Meaning SI unit of measure alpha: alpha particle: angular acceleration: radian per second squared (rad/s 2) fine-structure constant: unitless beta: velocity in terms of the speed of light c: unitless beta particle: gamma: Lorentz factor: unitless photon: gamma ray: shear strain: radian