how can i solve this error?

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zahra zamani
zahra zamani 2020-1-19
评论： zahra zamani 2020-1-20
dx=0.1;
x=1:dx:6;
b=0.32;
ki=0;
for i=2:length(x)
temp(i-1,:)=Es*I*...
(- b^2*cos(x(i-1,:)*b) - b^2*cosh(x(i-1,:)*b) - ((cos(6*b) + cosh(6*b))*(b^2*sin(x(i-1,:)*b) + b^2*sinh(x(i-1,:)*b)))/(sin(6*b) + sinh(6*b)));
ki(i-1,:)=temp(i-1,:)*dx;
end
Es and I are constant.
error is
Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is
1-by-51.
Error in m2 (line 69)
ki(i-1,:)=temp(i-1,:)*dx;

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回答（1 个）

darova
darova 2020-1-19
Oops?
123.PNG
  8 个评论
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Walter Roberson
Walter Roberson 2020-1-19
It is not possible to mix discrete x with integral -- not unless you want to do simple numeric integration such as trapz()
zahra zamani
zahra zamani 2020-1-20
thank you so much .
i can to calculate k with trapz.
thanks

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