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The harmonic mean of a set of positive integers is the number of numbers times the reciprocal of the sum of their reciprocals. The optic equation requires the sum of the reciprocals of two positive integers a and b to equal the reciprocal of a third positive integer c. All solutions are given by a = mn + m 2, b = mn + n 2, c = mn.
In calculus, the reciprocal rule gives the derivative of the reciprocal of a function f in terms of the derivative of f. The reciprocal rule can be used to show that the power rule holds for negative exponents if it has already been established for positive exponents.
Negative reciprocity occurs when an action that has a negative effect on someone is returned with an action that has an approximately equal negative effect. [ 23 ] [ 28 ] For example, if an individual commits a violent act against a person, it is expected that person would return with a similar act of violence.
Marshall Sahlins, an American cultural anthropologist, identified three main types of reciprocity (generalized, balanced and negative) in the book Stone Age Economics (1972). [2] Reciprocity was also the general principle used by Claude Lévi-Strauss to explain the Elementary Structures of Kinship (1949), in one of the most influential works on ...
An L.A.-based psychologist said she doesn't return her shopping cart in a video that's generated more than 11 million views as of Monday and a litany of backlash.
For example, the reciprocal of 5 is one fifth (1/5 or 0.2), and the reciprocal of 0.25 is 1 divided by 0.25, or 4. The reciprocal function, the function f(x) that maps x to 1/x, is one of the simplest examples of a function which is its own inverse (an involution). Multiplying by a number is the same as dividing by its reciprocal and vice versa ...
An online shop evokes the physical analogy of buying products or services at a regular "brick-and-mortar" retailer or shopping center; the process is called business-to-consumer (B2C) online shopping. When an online store is set up to enable businesses to buy from another businesses, the process is called business-to-business (B2B) online ...
If the original random variable X is uniformly distributed on the interval (a,b), where a>0, then the reciprocal variable Y = 1 / X has the reciprocal distribution which takes values in the range (b −1,a −1), and the probability density function in this range is =, and is zero elsewhere.