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" Let me see, let me see...." he muttered, taking out his wand and smoothing the map out on his desk.
“让我看看,让我看看..”他嘟囔道,拿出魔杖,在桌子上铺平地图。
They smoothed out the map on the table.
【smooth】他们在桌上摊平地图。
光滑函数(smooth function)在数学中特指无穷可导的函数,也就是说,存在所有有限阶导数。若一函数是连续的,则称其为函数;若函数存在导函数,且其导函数连续,则称为连续可导,记为函数;若一函数阶可导,并且其阶导函数连续,则为函数()。而光滑函数是对所有都属于函数,特称其为函数。
例如,指数函数显然是光滑的,因为指数函数的导数是指数函数本身。
In mathematical analysis, the smoothness of a function is a property measured by the number of derivatives it has which are continuous. A smooth function is a function that has derivatives of all orders everywhere in its domain.
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