Nonlinear equations (Bisection and Secant methods), Nonlinear system (Fixed-point iteration)

The system must follow the requirements:

1. System must provide a choice of functions and methods for the user.
2. System must provide the user with results of the calculations.
3. System must provide the user with a delta value to compare results of Bisection and Secant methods.

Program must check convergence of each method and inform the user about errors.

Bisection and Secant methods

Bisection flowchart:

Secant flowchart:

Output example:

Fixed-point iteration method

Output example:

Flowchart: