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function Start_Callback£¨hObject, eventdata, handles£©
a=str2double£¨get£¨handles.input,'String'£©£©;
b=str2double£¨get£¨handles.max,'String'£©£©;
c=str2double£¨get£¨handles.mini,'String'£©£©;
d=str2double£¨get£¨handles.error,'String'£©£©;
rt=[];
x = linspace£¨c, b, 10000£©;
for i = 1:length£¨x£©;
y=@£¨x£©a;
y£¨x£¨i£©£©;
if abs£¨y£© < d
rt = [rt x£¨i£©];
end
end
yrt=@£¨x£©a;
yrt£¨x£¨i£©£©;
for i = 1:length£¨rt£©
plot£¨rt£¨i£©, yrt£¨i£©,'ro'£©;
hold on
end
yi = @£¨x£©a;
plot£¨x,yi£©
hold on; grid on
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