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The edge space is the /-vector space freely generated by the edge set E. The dimension of the vertex space is thus the number of vertices of the graph, while the dimension of the edge space is the number of edges. These definitions can be made more explicit.
An early graphing calculator was designed in 1921 by electrical engineer Edith Clarke. [1] [2] [3] The calculator was used to solve problems with electrical power line transmission. [4] Casio produced the first commercially available graphing calculator in 1985. Sharp produced its first graphing calculator in 1986, with Hewlett Packard ...
In graph theory, a deletion-contraction formula / recursion is any formula of the following recursive form: = + (/). Here G is a graph, f is a function on graphs, e is any edge of G, G \ e denotes edge deletion, and G / e denotes contraction. Tutte refers to such a function as a W-function. [1]
The following table compares general and technical information for a selection of common and uncommon Texas Instruments graphing calculators. Many of the calculators in this list have region-specific models that are not individually listed here, such as the TI-84 Plus CE-T, a TI-84 Plus CE designed for non-French European markets.
The Prizm Mini-SDK originally required Casio fx-9860 SDK to function, [9] which was later replaced by PrizmSDK. [10] An updated model, called the fx-CG50 or Graph 90+E in France, was released in January 2017 [11] with a more modern design (similar to the Classwiz scientific calculators) and a faster processor. The main menu screen has also been ...
In it, geometrical shapes can be made, as well as expressions from the normal graphing calculator, with extra features. [8] In September 2023, Desmos released a beta for a 3D calculator, which added features on top of the 2D calculator, including cross products, partial derivatives and double-variable parametric equations.
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Casio fx-115ES scientific calculator with Natural Display. (also called "Natural V.P.A.M." in the updated version) Revised version of the MS Series including the following changes: Multi-line 96×31 dot matrix displays, but character cells are connected by dots like graphing calculators