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The calculator can display either built-in graphs that are already programmed or display a user defined graph. [8] The user also has the option to rewrite any of the previously programmed graphs. [8] Statistical graphs can also be generated: bar graphs, line graphs, normal distribution curves, regression lines. [6]
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.
Texas Instruments TI-84 Plus, the most successful graphing calculator in terms of sales. A graphing calculator (also graphics calculator or graphic display calculator) is a handheld computer that is capable of plotting graphs, solving simultaneous equations, and performing other tasks with variables.
The TI-Nspire is a graphing calculator line made by Texas Instruments, with the first version released on 25 September 2007. [1] [better source needed] The calculators feature a non-QWERTY keyboard and a different key-by-key layout than Texas Instruments's previous flagship calculators such as the TI-89 series.
A curve in the complex plane is defined as a continuous function from a closed interval of the real line to the complex plane: : [,]. This definition of a curve coincides with the intuitive notion of a curve, but includes a parametrization by a continuous function from a closed interval.
Closed graph theorems are of particular interest in functional analysis where there are many theorems giving conditions under which a linear map with a closed graph is necessarily continuous. If f : X → Y is a function between topological spaces whose graph is closed in X × Y and if Y is a compact space then f : X → Y is continuous.