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Raspberry Pi 的代码
fresnels.m
function cx = fresnels(x)
cx = sin(pi * .5 .* x.^2);
fresnelc.m
function cx = fresnelc(x)
cx = cos(pi * .5 .* x.^2);
fresnels.m
function cx = fresnels(x)
cx = sin(pi * .5 .* x.^2);
normal.m
function y=normal(x)
y=(1/(2*pi)^0.5)*exp(-x.^2/2);
myerrf.m
function y=myerrf(x)
y=1/sqrt(2*pi)*exp(-x.^2/2);
ex5_12.m
t=0:pi/50:2*pi;
r=sin(t).*cos(t);
polar(t,r,'-*');
sint.m
f=sym('3*sin((w)*t)') % f(t)=3sin(ωt),A=3
f1=subs(f,'w','pi/2') % ω=pi/2,T=4
ezplot(f1,[0,4*pi])
myerrf.m
function y=myerrf(x)
y=1/sqrt(2*pi)*exp(-x.^2/2);
dft.m
function X=dft(x,N)
w=2*pi/N;
for k=1:N
X(k)=0;
for n=1:N
X(k)=X(k)+x(n)*exp(-j*w*k*n);
end
end
ex5_12.m
t=0:pi/50:2*pi;
r=sin(t).*cos(t);
polar(t,r,'-*');