%Exercitiul 2

%a
f=@(x)(x.^2)-12.*x+11
fzero(f,[-2 6])

%b
f=@(x)3.*x+sin(x)-exp(x)
fzero(f,0)



% Exercitiul 1
k=16
xlim([-8 8])
ylim([-8 8])
[x1,y1]=meshgrid(x,y);
f=@(x,y)(sin(sqrt(k.*x.*x+k.*y.*y)./(sqrt(k.*x.*x+k.*y.*y)+10)))
z=f(x1,y1)
surf(x,y,z,'XDataSource','x','YDataSource','y','ZDataSource','z')
for k=16:-0.2:0
f=@(x,y)(sin(sqrt(k.*x.*x+k.*y.*y)./(sqrt(k.*x.*x+k.*y.*y)+10)))
z=f(x1,y1);
refreshdata()
pause(0.1)
end