您所在位置：主题：[讨论]求教！高手帮忙我的M-file 請問如何找到 L 的最小值?
elitemichael
[专家分：0] 发布于 2008-11-27 13:35:00
當Tac 和 Tab 都小於2000時，請問如何找到 L 的最小值?
再加一個 While Loop?
[color=0000FF]L=3:0.1:6.7;
th = acos((45-L.^2)/36);
ph = asin((6*sin(th))./L);
j=1;
Tab = 2000./(sin(th)+cos(th).*tan(ph));
if Tab<2000 then
Tac = (2000.*cos(th))./(sin(th)+cos(th).*tan(ph));
if Tac<2000 then
ARRAY(j)=(L,Tab,Tac)
j=j+1;
end
end
plot(ARRAY(:,1),ARRAY(:,2),'m',ARRAY(:... of AC'),ylabel('Tension'),title('Tension Plot');
legend('Tab','Tac'); [/color]
再加一個 While Loop?
[color=0000FF]L=3:0.1:6.7;
th = acos((45-L.^2)/36);
ph = asin((6*sin(th))./L);
j=1;
Tab = 2000./(sin(th)+cos(th).*tan(ph));
if Tab<2000 then
Tac = (2000.*cos(th))./(sin(th)+cos(th).*tan(ph));
if Tac<2000 then
ARRAY(j)=(L,Tab,Tac)
j=j+1;
end
end
plot(ARRAY(:,1),ARRAY(:,2),'m',ARRAY(:... of AC'),ylabel('Tension'),title('Tension Plot');
legend('Tab','Tac'); [/color]