从人口普查统计，已知某国新生儿母亲的年龄累计分布为N=N(t)，其中t为母亲年龄，N为新生儿的母亲年龄低于或等于t的新生儿数目。下表给出了间距为5的数据。 t 15 20 25 30 35 40 45 50 N 0 7442 26703 41635 49785 50209 50226 50230 取边界条件为N’(15)=N’(50)=0,利用三次样条插值求出15至50岁之间，每一年龄（即x=15,16,……，50）所对应的新生儿累计数目N，并绘出插值函数的图形。

In this project I chose Bosnian language to do the character frequency analysis. Bosnia and Herzegovina are the countries using Bosnian as their official language and more than 2.2 million people speak this language all around the world. It has 5

用来计算海水相对介电常数的matlab程序，计算方法源自微波雷达遥感-computes the real and imaginary parts of the relative dielectric constant of water at any temperature 0<t<30, Salinity 0<S<40 0/00, and frequency 0<f<1000GHz