Commit 2021-08-19 08:28 28a360a6
View on Github →feat(analysis/calculus/deriv): prove deriv_inv
at x = 0
as well (#8748)
- turn
differentiable_at_inv
anddifferentiable_at_fpow
intoiff
lemmas; - slightly weaker assumptions for
differentiable_within_at_fpow
etc; - prove
deriv_inv
andfderiv_inv
for allx
; - prove formulas for iterated derivs of
x⁻¹
andx ^ m
,m : int
; - push
coe
in these formulas;