помогииите пож) срочно!

F1=(integral [0;l2] q*x*dx + F*l2)/(l1+l2) = q*l2^2/(2*(l1+l2))+F*l2/(l1+l2)
F2=(integral [ll1;l2+l1] q*x*dx + F*l1)/(l1+l2)=q*l2*(1-l2/(2*(l1+l2)))+F*l2/(l1+l2)