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+package net.patowen.hyperbolicspace;%0D%0A%0D%0Apublic class MathHelper%0D%0A%7B%0D%0A%09public static double asinh(double x)%0D%0A%09%7B%0D%0A%09%09return Math.log(x + Math.sqrt(1+x*x));%0D%0A%09%7D%0D%0A%09%0D%0A%09public static double acosh(double x)%0D%0A%09%7B%0D%0A%09%09return Math.log(x + Math.sqrt(x*x-1));%0D%0A%09%7D%0D%0A%09%0D%0A%09public static double sqr(double x)%0D%0A%09%7B%0D%0A%09%09return x*x;%0D%0A%09%7D%0D%0A%7D%0D%0A

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