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The Mathematics Portal. Mathematics is the study of representing and reasoning about abstract objects (such as numbers, points, spaces, sets, structures, and games ). Mathematics is used throughout the world as an essential tool in many fields, including natural science, engineering, medicine, and the social sciences.
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Portal is a series of first-person puzzle-platform video games developed by Valve.Set in the Half-Life universe, the two main games in the series, Portal (2007) and Portal 2 (2011), center on a woman, Chell, forced to undergo a series of tests within the Aperture Science Enrichment Center by a malicious artificial intelligence, GLaDOS, that controls the facility.
A line integral is an integral where the function to be integrated, be it a scalar field as here or a vector field, is evaluated along a curve.The value of the line integral is the sum of values of the field at all points on the curve, weighted by some scalar function on the curve (commonly arc length or, for a vector field, the scalar product of the vector field with a differential vector in ...
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The trigonometric functions are functions of an angle; they are most important when studying triangles and modeling periodic phenomena, among many other applications. They are commonly defined as ratios of two sides of a right triangle containing the angle, and can equivalently be defined as the lengths of various line segments from a unit circle.