> # Maple sucks, well only slightly more that other software.
> # Maple crashes, save early and often
> # Maple does not re-execute commands when it loads
> # Maple thinks you know what you are doing, it echos commands it does not understand
> implicitplot3d(x+y+z=1,x=0..2,y=0..2,z=0..2,title="Command not found");
> # Maple is very picky about syntax
> # syntax 1, commands that don't end until either a `;' or a `:' appear
> 2+2
> 
> 
> 2+2;
> # syntax 2, `:' makes Maple silent
> 2+2:
> # syntax 3. Maple can't figure out 3x or xy or x y or x(y)
> 3x;
> 3*x;
> xy;
> x*y;
> # syntax 4. Maple uses `:=' for assignment, and `=' for equations.
> a:=2;
> b:=3;
> a*b;ab;
> solve({x+y=7,x-y=5});
> eqn:={x^2+y^2=4,(x-3)^2+y^2=4};
> solve(eqn);
> # Maple sometimes gives ugly answers. The above is another way of writing plus/minus sqrt(7)
> ### WARNING: allvalues now returns a list of symbolic values instead of a sequence of lists of numeric values
> allvalues(solve(eqn));
> # f(x):=x^2; does not work, instead use f:=x->x^2;
> f(x):=x^2; f(2); f(t);
> f:=x->x^2; f(2); f(t);
> #Maple is too smart for its own good. Both expressions and functions work in many places.
> plot(x^2,x=-1..1);plot(f(x),x=-1..1);
> # Syntax it is Pi and not pi
> pi;Pi;evalf(pi);evalf(Pi);
> # Syntax the is no e or E, instead do
> e:=exp(1);e^2;evalf(e^2);
> #but it can draw some pretty pictures
> f:=(x,y)->x^3-3*x*y^2;
> plot3d(f(x,y),x=-3..3,y=-3..3,title=`monkey saddle`);
> #it can integrate like a champ
> Int(Int(f(x,y),x=0..3),y=0..3)=int(int(f(x,y),x=0..3),y=0..3);
> # check answers
> eqn;subs({x=1,y=1}, eqn);
> ### WARNING: allvalues now returns a list of symbolic values instead of a sequence of lists of numeric values
> subs(allvalues(solve(eqn))[1],x^2+y^2);
> #Maple lies!
> a:=2;
> a+a;
> a;
>