a$=0$;

b$=1$;

c $=2$;

d $=2$;

Minimize $f(x_1,x_2)=x_1-A{x}_2+b{x}_1^2+c{x}_1{x}_2+d{x}_2^2$

Use any programing language of your preference

Use constant lambda

Run optimization for three different starting points

Draw chart

Optimality gap vs iterations

You can use Wolframalpha to explore function

Vary values of lambda

Draw chart lambda vs number of iterations