(a) Symbolic integration. MATLAB supports operations with symbolic variables, that is, all kinds of calculations using symbols in place of real-valued (numerical) variables. Symbolic integration is implemented in MATLAB through the function int(). Implement the following codes and write the output in your report, and also describe what each code does.
(a)
syms x
expr = -2*x/(1+x^2)^2;
F = int(expr)
(b)
syms x z
f(x,z) = x/(1+z^2);
F = int(f,x)
(c)
syms x z
f(x,z) = x/(1+z^2);
F = int(f,z)
(d)
syms x
expr = x^2;
F = int(expr,[0 1])