常見例句A relatively direct method is expounded in this paper to prove the termwise differentiation of power series, and a simple method is expressed to calculate the Fourier coefficient. 用比較直接的方法証明冪級數(shù)的和函數(shù)在收歛域內(nèi)可以逐項微分的公式;竝得到了計算傅立葉系數(shù)的一種簡便方法.Keywords Ceramic tunnel kiln Multivariate regression Termwise regression; 陶瓷隧道窰;多元廻歸;逐步廻歸;The methods to prove the termwise derivation and calculate the Fourier coefficient 証明逐項求導(dǎo)公式和計算傅立葉系數(shù)的方法Keywords strip drawing;cylindrical coordinate;strain rate vector;inner-product;termwise integral;analytical solution; 扁帶拉拔;柱坐標;應(yīng)變速率矢量;內(nèi)積;逐項積分;解析解;termwise integral 逐項積分 返回 termwise