∀ {𝕜 : Type u_1} [inst : NontriviallyNormedField 𝕜] [inst_1 : StarRing 𝕜] {E : Type u_2} [inst_2 : NormedAddCommGroup E]
  [inst_3 : NormedSpace 𝕜 E] {F : Type u_3} [inst_4 : NormedAddCommGroup F] [inst_5 : StarAddMonoid F]
  [inst_6 : NormedSpace 𝕜 F] [StarModule 𝕜 F] [ContinuousStar F] {f : E → F} [TrivialStar 𝕜],
  (Differentiable 𝕜 fun y => star (f y)) = Differentiable 𝕜 f