Implementing Euler's Forward, Backward, and Trapezoidal Formulas

1. Implement Euler's Forward Difference, Backward Difference, and Trapezoidal Formulas. 2. Develop universal programs for second-order and third-order Runge-Kutta methods. 3. Create a general-purpose program for Hamming's integration method. 4. Design a universal program for discretizing continuous system state equations using state transition methods.