Approximation of a root of

x3- ax - b = 0, a > 0, b > 0


6 2
2.380476143  
2.271526348  
2.262638892  
2.261874524  
2.261808492  
2.261802785  
2.261802292  
2.261802249  
2.261802246  
2.261802245  
2.261802245