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Y 的代码
real.m
function y = real(x)
% REAL Complex real part.
% $Id: real.m 3 2004-02-04 12:57:04Z mairas $
y = x;
y.s = real(y.s);
oplot0.dat
Y
+ *
* + *
kkspt0.dat
y( 0)=5.40000e+01 yy( 0)=5.68429e+01
y( 1)=1.45000e+02 yy( 1)=1.33629e+02
y( 2)=2.27000e+02 yy( 2)=2.44057e+02
y( 3)=3.59000e+02 yy( 3)=3.47943e+02
y( 4)=4.01000e+02 yy( 4)=3.93457e+02
gdfte0.dat
y( 0)=0.00000e+00
y( 1)=1.86090e-02
y( 2)=3.25359e-02
y( 3)=4.20480e-02
y( 4)=4.73684e-02
y( 5)=4.86842e-02
y( 6)=4.61538e-02
y( 7)=3.99123e-02
y( 8)=3.00752e-02
y( 9)=1.67423e-02
y(10)=0.
main.m
[y,fs,bits]=wavread('音乐.wav');
sound(y,fs);
figure(1)
plot(y)
title('声音信号的时域波形')
xlabel('时间');
ylabel('幅度');
figure(2)
freqz(y) %绘制信号采样后的频率响应图
title('声音经采样后的频率响
examp3_31.m
y=quadl(f,0,1.5,1e-20)
abs(y-y0)
examp6_8.m
y=[]; xx=0:.05:10; x0=0; h=optimset; h.Display='off';
for x=xx
f=inline(['w.*exp(w)-' num2str(x)],'w');
y1=fsolve(f,x0,h); x0=y1; y=[y,y1];
end
plot(xx,y)
y0=lambertw(xx); plot(xx,y0)
ff2.m
y=dsolve('D2y+4*Dy+29*y=0','y(0)=0,Dy(0)=15','x')
y.txt
6.9
12.5
20.0
15.7
24.9
23.4
30.2
35.6
39.1