@Test
	public void tanc_test() {
		
		try{
		double x = 30;
		TanhCFunction tanh = new TanhCFunction(x);
		double result= tanh.function(x);
		double exp = 0.9999999969540041;
		Assert.assertEquals(exp, result, 0.001);
		}		
		catch (Exception e) {
			// TODO Auto-generated catch block
			fail("Not yet implemented");
		}
	}