function bai10

i=0;

while i==0

x=input('Nhap x: ');

if (2.5<x) & (x<3.2)

i=1;

else

disp('* Ban da nhap sai x yeu cau nhap lai *')

end

end

i=0;

while i==0

C1=input('Nhap C1: ');

C2=input('Nhap C2: ');

C3=input('Nhap C3: ');

if (C1>C2) & (C2>C3)

i=1;

else

disp('* Ban da nhap sai cac he so C yeu cau nhap lai *')

end

end

n=linspace(0,100,1000);

Ne1=C1*n.^x;

Ne2=C2*n.^x;

Ne3=C3*n.^x;

hold on

plot(n,Ne1)

plot(n,Ne2)

plot(n,Ne3)