Usefull functions this file was created to hold some usefull functions for the game 'Graphwar'. Feel free to contribute or open an issue to add a function. a * abs(x - b) example: 0.5 * abs(x - 4) a * abs(x - b) - a * abs(x - c) example: 0.5 * abs(x - 4) - 0.5 * abs(x - 7) a/(1+(x-b)^2) example: 3/(1+(x-2)^2)
