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Raspberry Pi 的代码
example1_10.m
t=0:pi/20:2*pi;
plot(t,sin(t));
delete(gca);
idft.m
function g=idft(x,N)
n=0:(N-1);
T=zeros(1,N);
for k=0:(N-1)
p=x.*exp((j)*2*pi*n*k/N)/N;
z=0;
for i=1:N
z=z+p(i);
end
T(k+1)=z;
end
T
dft.m
function g=dft(x,N)
n=0:(N-1);
T=zeros(1,N);
for k=0:(N-1)
p=x.*exp((-j)*2*pi*n*k/N);
z=0;
for i=1:N
z=z+p(i);
end
T(k+1)=z;
end
T
sinc.m
function y=sinc(x)
% Y=SINC(X), determines the sinc function
y=(sin(pi*x)+(x==0))./(pi*x+(x==0));
ws.m
function f=f1(t)
t=linspace(0,2*pi,30);
f=sin(t);
plot(t,f,'-');
sinc.m
function y=sinc(x)
% Y=SINC(X), determines the sinc function
y=(sin(pi*x)+(x==0))./(pi*x+(x==0));
fesin.m
function f=fesin(x)
f=exp(-0.5*x).*sin(x+pi/6);
08-24.txt
>> x=cos(t);
>> y=sin(t);
>> z=t;
>> ezplot3(x,y,z,[0,6*pi]);
09-09.txt
>> x=[-3:0.2:3];
>> y=1/sqrt(2*pi)*exp(-1/2*x.^2);
>> subplot(1,2,1),plot(x,y,'r--*')
>> subplot(1,2,2),plot(x,y,'r*')
fesin.m
function f=fesin(x)
f=exp(-0.5*x).*sin(x+pi/6);