1. Write an application program described below to demonstrate your knowledge in using MATLAB or other programming language of your choice:
Build a graphing calculator. Your calculator must have the basic features of a regular calculator as in it should be able to add, subtract, multiply and divide. Additionally it should be able to calculate sin(x), cos(x) and tan(x) and ultimately it should allow user to plot the above functions. X could be a variable or an expression (function). Users must be able to select the display range for these functions.
1. Completeness of GUI functionality
2. Fault-free operation
3. Correctness of mathematical computations