a) Minimize the objective function, f(x) = 3x2 + over the interval -5 SX 55, using the following methods: (i) Set up a narrower bracket for the minimum point by using variable grid spacing method with 8 = 1.0 (4 marks) (ii) By using the new bracket in part (i), determine the minimum point of the function by using the following methods with TWO (2) iterations. A. Newton-Raphson method (5 marks) B. Secant method (5 marks) a) Minimize the objective function, f(x) = 3x2 + over the interval -5 SX 55, using the following methods: (i) Set up a narrower bracket for the minimum point by using variable grid spacing method with 8 = 1.0 (4 marks) (ii) By using the new bracket in part (i), determine the minimum point of the function by using the following methods with TWO (2) iterations. A. Newton-Raphson method (5 marks) B. Secant method