Scanned by CamScanner

Scanned by CamScanner

vet=1:1:5 ;

cont=0;

for l=20:10:60

tang=atand(80/l);

A1=31.2/3;

A2=0;

A3=20.8*l^2;

A4=(-3896*l^2)-(10400/(sind(tang))^2);

poli=[A1 A2 A3 A4];

sol=roots(poli);

B1=sol(1);

B2=sol(2);

B3=sol(3);

if B1>0

cont=cont+1;

disp (B1)

vet(cont)=B1

end

if B2>0

cont=cont+1;

disp(B2)

vet(cont)=B2

end

if B3>0

cont=cont+1;

disp(B3)

vet(cont)=B3

end

end

l=20:10:60;

plot(l,vet)

title('l x h');

xlabel('l (ft)');

ylabel('h (ft)');