Contents
Vänster rektangelregel i Matlab
f = @(x)x.*cos(x); a = 0; b = 1; n = 3; x = linspace(a,b,n+1); h = (b-a)/n; qv = sum(h*f(x(1:n)))
qv = 0.279636829763181
Exakt svar
sin(1)+cos(1)-1
ans = 0.381773290676036
Funktionen min_integral (uppgift 2 i lab6)
qv = min_integral(@(x)x.*cos(x),[0,1],3,1); exakt = sin(1)+cos(1)-1;
Uppgift 4 i lab6
f=@(x)x.*cos(x); q50=min_integral(f,[0,1],50,1); q100=min_integral(f,[0,1],100,1); exakt = sin(1)+cos(1)-1; (q50-exakt)/(q100-exakt)
ans = 2.007995479710493