∀ {α : Type u_1} {β : Type u_2} [inst : Semiring α] [inst_1 : LinearOrder α] [IsStrictOrderedRing α] {l : Filter β}
  {f : β → α} {c : α}, 0 < c → Filter.Tendsto (fun x => c * f x) l Filter.atTop → Filter.Tendsto f l Filter.atTop