[~~卍卍~~]

f1=49.8;
t=0:0.001:1;
for m=0:49;
if k==0
x(t)=0.2;
elseif k==1
x(t)=5*sin(2*pi*f1*t+45);
elseif k==2:2:49
x(t)=(2/m)*sin(2*pi*f1*t+30);
elseif k==3:2:49
x(t)=(3/m)*sin(2*pi*f1*t+60);
end