have o : Set.Ioo l r ⊆ Set.Icc l r := Set.Ioo_subset_Icc_self
d : ℕ
l r : ℝ
h : l < r
d_lt_succ_d : d < d.succ
h' : DifferentiableOn ℝ (iteratedDerivWithin d Real.exp (Set.Icc l r)) (Set.Icc l r)
⊢ DifferentiableOn ℝ (iteratedDerivWithin d Real.exp (Set.Icc l r)) (Set.Ioo l r)
d : ℕ
l r : ℝ
h : l < r
d_lt_succ_d : d < d.succ
h' : DifferentiableOn ℝ (iteratedDerivWithin d Real.exp (Set.Icc l r)) (Set.Icc l r)
o : Set.Ioo l r ⊆ Set.Icc l r
⊢ DifferentiableOn ℝ (iteratedDerivWithin d Real.exp (Set.Icc l r)) (Set.Ioo l r)