Originally posted by 632564170 at 2011-05-21 13:31:39:
这个积分用int积不出来，可以用quad求解

Originally posted by 632564170 at 2011-05-21 13:33:46:
命令和求出来的值为4.77481442021522
function f=f(x)
format long
f=0.07227*(sqrt(x.^3).*exp(-(x+0.09283).^2./8.235.^2));
>> [s,n]=quad('f',0,11)
s =
   4.77481442021522
n =
    41

Originally posted by 632564170 at 2011-05-21 13:33:46:
命令和求出来的值为4.77481442021522
function f=f(x)
format long
f=0.07227*(sqrt(x.^3).*exp(-(x+0.09283).^2./8.235.^2));
>> [s,n]=quad('f',0,11)
s =
   4.77481442021522
n =
    41

Originally posted by ilxmc at 2011-05-21 13:42:38:
你能不能把运行的图截一下呢，因为我对matlab不太了解，输入的好像不对，另外，我如果算11到无穷的积分，继续用这个算可不可以
谢谢你啦