isabelle/valid/amc12a_2002_p12.thy (15 lines of code) (raw):
(*
Authors: Wenda Li
*)
theory amc12a_2002_p12 imports
Complex_Main
"HOL-Computational_Algebra.Computational_Algebra"
begin
theorem amc12a_2002_p12:
fixes f :: "real => real"
and k :: real
assumes "\<forall> x. f x = x^2 - 63 * x + k"
and "f -` {0} \<subseteq> {x ::real. \<exists> n :: nat. n = x \<and> prime n}"
shows "k=122"
sorry
end