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Raspberry Pi 的代码
examp5_2.m
syms x w; f=x^2*exp(-2*x)*sin(x+pi);
F=laplace(f,x,w)
ilaplace(F)
examp10_34.m
t=0:0.01:pi; y=sin(3*t+1); y1=3^0.75*sin(3*t+1+0.75*pi/2);
y2=glfdiff(y,t,0.75); plot(t,y1,t,y2)
examp2_24.m
theta=0:0.01:6*pi; rho=5*sin(4*theta/3); polar(theta,rho)
rho=5*sin(theta/3); polar(theta,rho)
fesin.m
function f=fesin(x)
f=exp(-0.5*x).*sin(x+pi/6);
fun.m
function y=fun(x1,x2)
y=21.5+x1.*sin(4.*pi.*x1)+x2.*sin(20.*pi.*x2);
c124.m
Fs=10^6/pi; num=[0 10^5]; den=[1 10^5];
[b, a]= bilinear(num, den, Fs)
c123.m
T=pi/10^6; num=T*[0 10^5]; den=[1 10^5];
Fs=1/T;
[b a]=impinvar(num,den,Fs)
08-09.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*')
07-24.txt
>> x=cos(t);
>> y=sin(t);
>> z=t;
>> ezplot3(x,y,z,[0,6*pi]);
ex3601.m
%例36-1 绘制sin函数
fplot(@sin,[0,2*pi])