How to do polynomial differentiation
8 views (last 30 days)
Show older comments
Raiven Balderas
on 28 Mar 2018
Commented: Raiven Balderas
on 28 Mar 2018
How to do polynomial differentiation without using known matlab commands
2 Comments
Guillaume
on 28 Mar 2018
Why wouldn't you want to use known matlab commands. And for that matter, what are unknown matlab commands then?
Accepted Answer
Roger Stafford
on 28 Mar 2018
Let P be the usual Matlab row vector of coefficients of a polynomial. Then, (as we all learned in calculus,) the corresponding vector of coefficients of the polynomial's derivative, dP, is:
n = length(P);
dP = (n-1:-1:1).*P(1:n-1);
More Answers (1)
Walter Roberson
on 28 Mar 2018
Multiply each location in the coefficient vector by the degree it corresponds to, and get rid of the location corresponding to degree 0. You can probably build the degree list using the ":" operator.
0 Comments
See Also
Categories
Find more on Polynomials in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!