integration with vectors constants

Question

Victoria Muntaner 2020-12-1

回答： Shubham Khatri 2020-12-4

Hello,

I am starting with MATLAB and I am trying to do an integration with constants that are vectors for an assigment.

For example I have a fuction that I want to integrate with respect to r, with r from [ro, ri];

f=(P2-P1)*(r^2-ro^2)/(4*z)*vc (it is just an example).

P2 and vc are vectors that changes with time and they are both the same length.

P2=[1;2;3] and vc=[3,4,5]

ri=2, ro=6, z=7 and are fixed values.

After i defined the values i tried with:

syms r

f=(P2-P1).*(r^2-ro^2)/(4*z).*vc

Q = int (f, r, [ro, ri])

But whenever I put the fuction I already get wrong values.

Hope you can help and thanks in advanced,

Victoria

Answer 1

Shubham Khatri 2020-12-4

Hello Victoria,

To my understanding, vc is a column vector where as P2 is a row vector. Please change vc to a row vector.

Hope it helps