Riemanns_integral error

1 次查看（过去 30 天）
Coolman
Coolman 2021-3-14
评论： Coolman 2021-3-14
I am trying to use rsums for riemanns. For this equation . I know it simplifies down too umax=2uavg but its more for evidence using the 2 methods mentioned before. my main problem for Riemanns is having this error. could someone explain what I am doing wrong?
Error using sym/rsums
Too many output arguments.
Error in LiveEditorEvaluationHelperESectionEval>Riemanns_integral (line 122)
B1 = rsums(B,[0,R],r);
Error while evaluating UIControl Callback
function Riemanns_integral(~,~) % value entery for the function
uavg = input('average velocity m/s ');
R= input('inner radius m ');
syms r
T = uavg*pi*R^2;
B = (1-(r/R)^2)*r;
B1 = rsums(B,[0,R],r);
B2 = rsums(B1,[0,2*pi],x)
UmaxRI = T/B2

请先登录，再回答此问题。

回答（1 个）

KALYAN ACHARJYA
KALYAN ACHARJYA 2021-3-14
Error using sym/rsums
Too many output arguments.
If you check the MATLAB docs of rsums: Which is function for displays a iteractive graph
"rsums(f) displays a iteractive graph of f(x) using 10 terms (rectangles).", Hence it might be not accept any output arguments (probable reason).
function Riemanns_integral(~,~) % value entery for the function
uavg = input('average velocity m/s ');
R= input('inner radius m ');
syms r
T = uavg*pi*R^2;
B = (1-(r/R)^2)*r;
rsums(B,[0,R]);
%B2 = rsums(B1,[0,2*pi],x)
%UmaxRI = T/B2
  1 个评论
Coolman
Coolman 2021-3-14
strange my lecturer told me that I have to use Riemanns integral to get the answer of the double intergral any idea how I could do it then?

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Mathematics 的更多信息

标签

产品


版本

R2018b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by