% Octave Sitzung S. 242 format long; function y = intfun (t, alpha) x=2*t./(1+t); dx=2./(1+t).^2; y = dx.*x.^ alpha; end alfa=pi/4; [ts,ws]=q_ossinf(16,alfa/2,1/8); [tc,wc]=q_ossinf(16,alfa/2,5/8); wf=ws.*intfun(ts,alfa); q=sum(wf), sum(abs(wf)>eps*q) x=2*ts./(1+ts); wf1=wc.*intfun(tc,alfa).*(1+tc)/2; wf2=ws.*log(x).*intfun(ts,alfa); dq=sum(wf1)+sum(wf2), sum(abs(wf1)>eps*dq), sum(abs(wf2)>eps*dq) disp('\n')