8 lines
		
	
	
		
			163 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			8 lines
		
	
	
		
			163 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
"use strict";
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module.exports = function () {
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	var acosh = Math.acosh;
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	if (typeof acosh !== "function") return false;
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	return acosh(2) === 1.3169578969248166;
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};
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