no goals
ι : Type ?u.238911
ι' : Type ?u.238914
α : Type u_2
β : Type u_1
γ : Type ?u.238923
inst✝¹ : LinearOrderedField α
l : Filter β
f : β → α
r : α
inst✝ : NeBot l
⊢ Tendsto (fun x => f x * r) l atBot ↔ 0 < r ∧ Tendsto f l atBot ∨ r < 0 ∧ Tendsto f l atTop
simp only [mul_comm _ r, tendsto_const_mul_atBot_iff]