In Matlab, polynomials are represented by a vector of coefficients. For example, the polynomial p=a*x^2 + b*x + c is represented by the vector p=[a, b, c].
In this problem, you will be given a polynomial p and a power N. We would like you to return the vector q that represents the polynominal p^N, the Nth power of p. If p = (x + 1), for instance, you will be returning the coefficients of (x+1)^N. (N will be a positive integer greater than 0.)
Solution Stats
Problem Comments
Solution Comments
Show commentsProblem Recent Solvers97
Suggested Problems
-
Find the sum of all the numbers of the input vector
54319 Solvers
-
Sum of first n terms of a harmonic progression
503 Solvers
-
Flag largest magnitude swings as they occur
690 Solvers
-
605 Solvers
-
find the surface area of a cube
568 Solvers
More from this Author2
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Thought of another way to do this...
q=poly(kron(roots(p),ones(N,1)));
One-liner with size 21, but fails because of trivial roundoff error :(
This isnt a particularly difficult problem
you can call this function powerpoly
function ppower = powerpoly(p,n)
ppower = p;
i = 1
while i < n
ppower = conv(ppower,p);
i = i + 1;
end