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  2. Doubtnut - Wikipedia

    en.wikipedia.org/wiki/Doubtnut

    The app extracts text from the image and tries to match it in its database of questions which are pre-answered, having recorded video solutions. If it finds a match, then the result is provided to the user; otherwise, it asks the user to post their question publicly for tutors available on the platform to provide a video explaining their query.

  3. Vedantu - Wikipedia

    en.wikipedia.org/wiki/Vedantu

    The company was launched in 2014. [1] Its name, Vedantu, is derived from the Sanskrit words Veda (knowledge) and Tantu (network). [2] The organization is run by IIT alumni Vamsi Krishna (co-founder and CEO), Pulkit Jain (co-founder and head of product), Saurabh Saxena (co-founder) and Anand Prakash (co-founder and head of academics).

  4. Harmonic progression (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Harmonic_progression...

    In mathematics, a harmonic progression (or harmonic sequence) is a progression formed by taking the reciprocals of an arithmetic progression, which is also known as an arithmetic sequence. Equivalently, a sequence is a harmonic progression when each term is the harmonic mean of the neighboring terms.

  5. Bhāskara I - Wikipedia

    en.wikipedia.org/wiki/Bhāskara_I

    Bhāskara (c. 600 – c. 680) (commonly called Bhāskara I to avoid confusion with the 12th-century mathematician Bhāskara II) was a 7th-century Indian mathematician and astronomer who was the first to write numbers in the Hindu–Arabic decimal system with a circle for the zero, and who gave a unique and remarkable rational approximation of the sine function in his commentary on Aryabhata's ...

  6. Extraneous and missing solutions - Wikipedia

    en.wikipedia.org/wiki/Extraneous_and_missing...

    In mathematics, an extraneous solution (or spurious solution) is one which emerges from the process of solving a problem but is not a valid solution to it. [1] A missing solution is a valid one which is lost during the solution process.

  7. Chegg - Wikipedia

    en.wikipedia.org/wiki/Chegg

    In the same year, Chegg also acquired Cramster, a provider of online homework help, [28] and Notehall, an online marketplace for class notes. [ 29 ] In 2011, Chegg acquired Zinch , a scholarship search and networking service for high school students and college recruiters, and continues to offer the service, under the Chegg brand name. [ 30 ]

  8. Anand Kumar - Wikipedia

    en.wikipedia.org/wiki/Anand_Kumar

    Anand Kumar (born 1 January 1973) is an Indian mathematics educator, best known for his Super 30 program , which he started in Patna, Bihar in 2002. He is known for coaching underprivileged students for JEE–Main and JEE–Advanced, the entrance examinations for the Indian Institutes of Technology ().

  9. Magic hexagon - Wikipedia

    en.wikipedia.org/wiki/Magic_hexagon

    An order 9 magic hexagon was found by Klaus Meffert on September 10, 2024 with help of an AI: It starts with -108 and ends with 108, and its sum is 0. The solution was found by a python program that was created by the author, utilizing an AI for critical parts of the code.