DISCLAIMER: These are my own views and in no way depict those of MathWorks.
Hello Joe,
The error you seem to be gettting is:
Error using *
Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix matches the number of rows in the second matrix. To perform elementwise
multiplication, use '.*'.
This is because in the line:
G = a ./ ((s + b) *(s.^2 + c*s + d) *(s.^2 + e*s + f));
you have used '*' operator to multiply the terms in the denominator. But in MATLAB '*' operator is considered to be matrix multiplication by default. And if we check the dimensions of each term you are trying tu multiply, this is the result:
Which are clearly incompatible for matrix multiplication.
Since you are trying to carry out element-wise multiplication, the right operator would be '.*'
hence the right expression would be:
G = a ./ ((s + b) .*(s.^2 + c*s + d) .*(s.^2 + e*s + f));
Hope this helps.
