無限 むげん かい微分 びぶん可能 かのうじゃありません
mugenka ibibunkano uja arimasen

Desu Copula
na-Adjective
Negation Auxiliary

The polite negative form of 無限回微分可能

1. Not infinitely differentiable.; It is not infinitely differentiable.

Negative
Polite
Terminal Form
Mathematics