| http://www.w3.org/ns/prov#value | - This was fundamental to the development of infinitesimal and integral calculus.[21] While Ibn al-Haytham solved the problem using conic sections and a geometric proof, Alhazen's problem remained influential in Europe, as later mathematicians such as Christiaan Huygens, James Gregory, Guillaume de l'H???pital, Isaac Barrow and many others attempted to find an algebraic solution to the problem, usin
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