True exact I. Qed.
The first exercise:
Get a root of the polynomial x 3 + 3 x 2 + 4 x + 2 0 using z3. Can you use z3 to show this is the only solution?
Here we open up the reals.
It is easy enough to confirm that the solution of x -1 is a zero using the [ring] tactic.
Require Import Reals.
Open Scope R scope.
Print Scope R scope.
Scope R scope
Delimiting key is R
Bound to class R r ² : Rsqr r x ^ y : pow x y x y : Rge x y x y : Rgt x y x y z : and (Rle x y) (Rle y z)