Derivative+line
21Energy derivative — Also known as energy trade, oil trade, gas trade, power trade. Major players include major trading houses, oil companies, utilities, financial institutions.This article can briefly present the definition, applications, and brief history of the… …
22Contour line — This article is about lines of equal value in maps and diagrams. For more meanings of the word contour , see Contour (disambiguation). The bottom part of the diagram shows some contour lines with a straight line running through the location of… …
23Command-line interface — Screenshot of a sample Bash session. GNOME Terminal 3, Fedora 15 …
24partial derivative — Math. the derivative of a function with respect to one of its variables with all other variables held constant. [1970 75] * * * In differential calculus, the derivative of a function of several variables with respect to change in just one of its… …
25Balanced line — In telecommunications and professional audio, a balanced line or balanced signal pair is a transmission line consisting of two conductors of the same type, and equal impedance to ground and other circuits. [Young EC, The Penguin Dictionary of… …
26tangent line — In geometry, a line that intersects a circle exactly once; in calculus, a line that touches a curve at one point and whose slope is equal to that of the curve at that point. Particularly useful as approximations of curves in the immediate… …
27directional derivative — Math. the limit, as a function of several variables moving along a given line from one specified point to another on the line, of the difference in the functional values at the two points divided by the distance between the points. * * * …
28directional derivative — Math. the limit, as a function of several variables moving along a given line from one specified point to another on the line, of the difference in the functional values at the two points divided by the distance between the points …
29a|ce|tyl|cho|line — «uh SEE tuhl KOH leen, lihn; KOL een, ihn», noun. a substance produced in nerve tissue and closely associated with the transmission of nerve impulses in the body. It is a derivative of choline. Produced synthetically, it is used in treating high… …
30quin|az|o|line — «kwih NAZ uh leen, lihn», noun. 1. a colorless, crystalline substance generally considered as a quinoline derivative. Formula: C8H6N2 2. any one of various substances derived from this compound. ╂[< quin(oline) + azol(e) + ine2] …
