Welcome to the 1520 Perfect Dictionary
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| Differential (4) | |
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| DIFFERENTIAL (4) Definition: (mathematics) The product of the derivative of a function of one variable and the increment of the variable. For functions of more than one variable the differential is the sum of the products of the partial derivatives and the increment of the derivative that is not held constant. ____________________________________ See perfect product (4). _____ See perfect particularity (1). | |
1520 Products |
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1520 Products was established in 2005 with the purpose of entertaining and teaching us on key and important aspects of life (such as marriage, sex, etc) through the playing of games which will allow us to laugh but at the same time pass a message of what is the right or ideal way. |
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 1520 Sex Game |
 1520 Puzzles |
 1520 Marriage Game |