引用第2樓please於2011-05-31 23:17發表的 : 預科Applied Maths... btw, Taylor series 是用來估計當x在a附近時f(x)的近似值 ( f(x) - f(a) ) / (x - a) = f'(a) 應該是( f(x) - f(a) ) / (x - a) = f'(ξ), where ξ between x and a 才對吧...這是mean value theorem 好像prove個error term時會用到此theorem...但我不清楚,畢竟不在課程範圍內(逃) .......
姐係揾f(x)在a和x中間的mean value? |