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function ctn
y0=[0;0];
%tspan=[0:2.8202*10^(-5)/100:2.8202*10^(-5)];
tspan=[0:2.8202*10^(-6)/100:2.8202*10^(-6)];
[t,y]=ode45('funb',tspan,y0,[]);

x=0:0.33/100:0.33;
a=length(t);
b=length(x);
for i=1:a
for j=1:b
z(j,i)=2.7786*sin(2*pi/0.33*x(j)).*y(i,1);
end
end
mesh(t,x,z);
xlabel('t'),ylabel('x'),zlabel('z')


function equ1=funb(t,y,flag)
equ1=[y(2);(-1.6561*10^5*y(2)-3.2257*10^10*y(1)+(3.5454e+008./0.1295)*2.7786*sin(pi/0.33*8.2980*10^10*t^2))]




function cttttn
w0=[0;0];
%tspan=[0:2.8202*10^(-5)/100:2.8202*10^(-5)];
tspan=[0:2.8202*10^(-6)/100:2.8202*10^(-6)];
[t,w]=ode45('funa',tspan,w0,[]);

x=0:0.33/100:0.33;
a=length(t);
b=length(x);
for i=1:a
for j=1:b
z(j,i)= 2.7786*sin(pi/0.33*x(j)).*w(i,1);
end
end
mesh(t,x,z);
xlabel('t'),ylabel('x'),zlabel('z')


function equ1=funa(t,w,flag)
equ1=[w(2);(-1.6561*10^5*w(2)-3.2255*10^10*w(1)+(3.5454e+008./0.2028)*2.7786*sin(pi/0.33*0.5*8.2980*10^10*t^2))]
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