`BookProof.ChapterLaplacianProduct.fderiv_radial` {g : ℝ → ℝ} {x : E} (hx : x ≠ 0) (hg : ContDiffAt ℝ 2 g ‖x‖) : fderiv ℝ (fun y : E => g ‖y‖) x = (deriv g ‖x‖ /...

Initializing...

`BookProof.ChapterLaplacianProduct.fderiv_radial` {g : ℝ → ℝ} {x : E} (hx : x ≠ 0) (hg : ContDiffAt ℝ 2 g ‖x‖) : fderiv ℝ (fun y : E => g ‖y‖) x = (deriv g ‖x‖ /... · Prove2Me