面向计算科学与工程的Matlab编程源码

% script Eg4_1
% Plots the function f（x） = sin（5x）*exp（-x/2）/（1 + x^2） across [-23].

L = -2;  % Left endpoint
R =  3;  % Right endpoint
N = 200; % Number of sample points
% Obtain the vector of x-values and f-values...
x = linspace（LRN）;
y = sin（5*x） .* exp（-x/2） ./ （1 + x.^2）;
% Plot and label...
plot（xy[L R][0 0]‘:‘）
title（‘The function f（x） = sin（5x） * exp（-x/2） / （1 + x^2）‘）
ylabel（‘y = f（x）‘）
xlabel（‘x‘）

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2010-01-14 21:01  InsightData12_4
     文件     1642731  2010-01-14 20:58  InsightData12_4Cornell_Clock_Gray.jpg
     文件     9582749  2009-06-08 15:43  InsightData12_4Cornell_Clock.JPG
     目录           0  2010-01-14 21:02  InsightData13_1
     文件      159992  2008-09-23 03:24  InsightData13_1BigBen.wav
     目录           0  2010-01-14 19:43  InsightData11_1
     文件        4237  2008-08-08 10:34  InsightData11_1Sydney.dat
     文件        4240  2008-08-08 10:34  InsightData11_1Detroit.dat
     文件        4239  2008-08-08 10:34  InsightData11_1Cairo.dat
     文件       74935  2009-01-17 19:38  InsightData11_1SunriseSunsetData.zip
     文件        4241  2008-08-08 10:34  InsightData11_1Honolulu.dat
     文件        4238  2008-08-08 10:34  InsightData11_1Houston.dat
     文件        4238  2008-08-08 10:34  InsightData11_1Chicago.dat
     文件        4237  2008-08-08 10:34  InsightData11_1Boston.dat
     文件        4237  2008-08-08 10:34  InsightData11_1Moscow.dat
     文件        4238  2008-08-08 10:34  InsightData11_1Teheran.dat
     文件        4239  2008-08-08 10:34  InsightData11_1Bogata.dat
     文件        4245  2008-08-08 10:34  InsightData11_1RiodeJaneiro.dat
     文件        4243  2008-08-08 10:34  InsightData11_1Baltimore.dat
     文件        4243  2008-08-08 10:34  InsightData11_1Pittsburgh.dat
     文件        4239  2008-08-08 10:34  InsightData11_1Athens.dat
     文件        4237  2008-08-08 10:34  InsightData11_1Denver.dat
     文件        4240  2008-08-08 10:34  InsightData11_1Ithaca.dat
     文件        4238  2008-08-08 10:34  InsightData11_1Atlanta.dat
     文件        4238  2008-08-08 10:34  InsightData11_1Phoenix.dat
     文件        4242  2008-08-08 10:34  InsightData11_1Milwaukee.dat
     文件        4236  2008-08-08 10:34  InsightData11_1Tokyo.dat
     文件        4238  2008-08-08 10:34  InsightData11_1Miami.dat
     文件        4236  2008-08-08 10:34  InsightData11_1Tampa.dat
     文件        4240  2008-08-08 10:34  InsightData11_1Beijing.dat
     文件        4240  2008-08-08 10:34  InsightData11_1Cleveland.dat
............此处省略211个文件信息