How to take and integral of a matrix

Hi

I got this matrix 2x1 that i have to integrate, matrix's elements are constants and I have to integrate in two finite values (0 and 12).

I am using the command integral(fun,0,12) but it keeps giving me errors like : First input argument must be a function handle.

Or when I use int(fun,0,12) it gives me another error : Undefined function 'int' for input arguments of type 'double'.

this time i als tried to put int ('fun',0,12) but it gives me this: Undefined function 'int' for input arguments of type 'char'.

Can anyone help?

Answer 1

[Ameer Hamza]

You can integrate a constant matrix by simply multiplying it with the length of the interval.

M = [1 2];
M_int = M*(12-0)

However, if you want to use integral() the following shows the correct syntax

M = [1 2];
fun = @(x) M;
integral(fun, 0, 12, 'ArrayValued', 1)

Read more about function handles: https://www.mathworks.com/help/matlab/function-handles.html, https://www.mathworks.com/help/matlab/matlab_prog/creating-a-function-handle.html

[Antonio Belmaggio]

Thank you, it now works!

[Ameer Hamza]

I am glad to be of help!