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2. Lemniscate elliptic functions - Wikipedia

   en.wikipedia.org/wiki/Lemniscate_elliptic_functions

   While the trigonometric sine relates the arc length to the chord length in a unit-diameter circle + =, [3] the lemniscate sine relates the arc length to the chord length of a lemniscate (+) =. The lemniscate functions have periods related to a number ϖ = {\displaystyle \varpi =} 2.622057... called the lemniscate constant , the ratio of a ...

3. Method of images - Wikipedia

   en.wikipedia.org/wiki/Method_of_images

   The method of images (or method of mirror images) is a mathematical tool for solving differential equations, in which boundary conditions are satisfied by combining a solution not restricted by the boundary conditions with its possibly weighted mirror image. Generally, original singularities are inside the domain of interest but the function is ...

4. Floor and ceiling functions - Wikipedia

   en.wikipedia.org/wiki/Floor_and_ceiling_functions

   In mathematics, the floor function is the function that takes as input a real number x, and gives as output the greatest integer less than or equal to x, denoted ⌊x⌋ or floor(x). Similarly, the ceiling function maps x to the least integer greater than or equal to x , denoted ⌈ x ⌉ or ceil( x ) .

5. Sagitta (geometry) - Wikipedia

   en.wikipedia.org/wiki/Sagitta_(geometry)

   In geometry, the sagitta (sometimes abbreviated as sag [1]) of a circular arc is the distance from the midpoint of the arc to the midpoint of its chord. [2] It is used extensively in architecture when calculating the arc necessary to span a certain height and distance and also in optics where it is used to find the depth of a spherical mirror ...

6. Christie’s calculus: Trump is ‘in the rearview mirror’

   www.aol.com/news/christie-calculus-trump...

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7. Shawarma restaurant ad goes so viral, customers are driving ...

   www.aol.com/shawarma-restaurant-ad-goes-viral...

   Al Zein, a Syrian shawarma restaurant in Alpharetta, Georgia, is going viral for an ad so "brilliant'," people say they’re going to drive hours to try its food.