Error Undefined x!

1 次查看（过去 30 天）

显示更早的评论

Zhuoying Lin 2017-11-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/366336-error-undefined-x

评论： Star Strider 2017-11-12

采纳的回答： Star Strider

在 MATLAB Online 中打开

In my script, I call a function value to input values and put the input in another function integrnfn:

[A,x1,x2]=value;
y=integrfn(A,x1,x2);
fprintf('The value of the integral is %.3f', integrfn(A,x1,x2))
function [A,x1,x2]=value
A=input('Please enter a positive value: ');
x1=input('Please enter another positive value: ');
x2=input('Please enter a positive value that is greater than the previous one: ');
end 
function y=integrfn(A,x1,x2)
y=int(A*exp(-x^2)*cos(2*x)/(1+x^2),x,x1,x2);
end

However, when I run it, it says:

Undefined function or variable 'x'.
Error in script >integrfn (line 15)
y=int(A*exp(-x^2)*cos(2*x)/(1+x^2),x,x1,x2);
Error in the script (line 5)
y=integrfn(A,x1,x2);

Can someone tell me the problem?

Thank you!!