Fram teaching, this paper has found out the way of solving inverse laplace transformation of ratinal fractional function by using the method of partial fruction.
从教学出发，论证了用部分分式方法求有理分式函数Ｆ（ｓ）拉普拉斯逆变换的方法。
The indefinite integral formula of rational proper fraction function is worked out by utilizing the relation between derivation and indefinite integral, and indefinite integral is calculated by using derivative.
本文利用求导与不定积分的关系,得出了有理真分式函数不定积分公式,并利用导数计算其不定积分。
This paper proves that residues at conjugate complex poles of rational fractional function with real coefficients are conjugate complex numbers as well.
留数是复变函数中的一个极其重要的概念,其应用也非常广泛,本文证明了实系数有理分式函数的共轭复极点的留数也互成共轭。