function F(x)
{
	return (Math.tan(x) - x -  0 . 15 );
}

function Fx(x)
{
	return (Math.tan(x) * Math.tan(x));
}

function main(xInit, eps, nIter)
{
	var i =  0 ;
	var x = xInit;
	while(Math.abs(F(x)) > eps)
	{
		x -= (F(x)/Fx(x));
		i++;

		if(i > nIter)
		{
			WScript.Echo("Cannot find root in " + nIter + " iterations. Choose another initial guess");
			return  0 ;
		}
	}

	return x;
}

var fourty_five_deg = Math.PI/ 4 ;

var x = main(fourty_five_deg,  0 . 0000000001 ,  20 );
if(x !=  0 )
	WScript.Echo("Detected root, x = " + x);