# Math for Welders: Instructor

Format: Paperback

Language: English

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The plus-minus sign (±) is a mathematical symbol with multiple meanings. • In mathematics, it generally indicates a choice of exactly two possible values, one of which is the negation of • In experimental sciences, the sign commonly indicates the conﬁdence interval or error in a measurement, often • In engineering the sign indicates the tolerance, which is the range of values that are considered to be acceptable, safe, or which comply with some standard, or with a contract.* [2] • In chemistry the sign is used to indicate a racemic mixture. • In chess, the sign indicates a clear advantage for the white player; the complementary sign ∓ indicates the same A version of the sign, including also the French word“ou”(meaning“or”) was used in its mathematical meaning by symbols, allowing the formula to represent two values or two equations.

Pages: 288

Publisher: Goodheart-Willcox Pub; Annotated edition (April 23, 2012)

ISBN: 1605259012

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Math for Welders