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0, 1, 3, 6, 2, 7, 13, 20, 12, 21, 11, 22, 10, 23, 9, 24, 8, 25, 43, 62, ... "subtract if possible, otherwise add" : a (0) = 0; for n > 0, a ( n ) = a ( n − 1) − n if that number is positive and not already in the sequence, otherwise a ( n ) = a ( n − 1) + n , whether or not that number is already in the sequence.
3/10: 3/40: 9/40 3/5: 3/10: −9/10: 6/5 1: −11/54: 5/2: −70/27: 35/27 7/8: 1631/55296: 175/512: 575/13824: 44275/110592: 253/4096: 37/378: 0: 250/621: 125/594: 0 ...
Symbolab is an answer engine [1] that provides step-by-step solutions to mathematical problems in a range of subjects. [2] It was originally developed by Israeli start-up company EqsQuest Ltd., under whom it was released for public use in 2011. In 2020, the company was acquired by American educational technology website Course Hero. [3] [4]
Besides support of factoring, algebraic number theory, and analysis of elliptic curves, it works with mathematical objects like matrices, polynomials, power series, algebraic numbers, and transcendental functions. [3]
[2] [3] Thus, in the expression 1 + 2 × 3, the multiplication is performed before addition, and the expression has the value 1 + (2 × 3) = 7, and not (1 + 2) × 3 = 9. When exponents were introduced in the 16th and 17th centuries, they were given precedence over both addition and multiplication and placed as a superscript to the right of ...
Microsoft Math Solver (formerly Microsoft Mathematics and Microsoft Math) is an entry-level educational app that solves math and science problems. Developed and maintained by Microsoft, it is primarily targeted at students as a learning tool. Until 2015, it ran on Microsoft Windows.
[15] [16] For factual question answering, WolframAlpha was used by Apple's Siri in October 2011 and Amazon Alexa in December 2018 for math and science queries. [ 17 ] [ 18 ] Users noticed that the Wolfram Integration for Siri was changed in June 2013 to use Bing to query certain results on iOS 7. [ 19 ]
Lotus, which had acquired Software Arts, including TK Solver, in 1984 [3] sold its ownership of the software to Universal Technical Systems less than two years later. [2] Release 5 was still considered "one of the longest–standing mathematical equation solvers on the market today" in 2012. [5] [6]