Another method of estimating the cube root of seven (7) is to use the recurrence relation. Xn+1 = (2x + 7)/3x. (a) Starting with initial value of Xo = 3, compute x1, X2, X3 and X4 rounding each value to 3 decimal place (dp) before using it in the formula. (10 marks) (b) Hence, determine the cube root of 7 correct to 3 decimal places. (2 marks)