Welcome to the 1520 Perfect Dictionary
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| Differential calculus | |
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| DIFFERENTIAL CALCULUS Definition: (mathematics) A type of mathematics that deals with quantities that change in time. It is used to calculate a quantity at a particular moment. ___________________________________ NOT APPLICABLE. See perfect type (1). See perfect mathematics (1). ____ See perfect calculation (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 |
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 1520 Marriage Game |