%% Differentiate Product of Polynomials
% Create two vectors to represent the polynomials a(x)=x^4-2x^3+11 and b(x)=x^2-10x+15.

a = [1 -2 0 0 11];
b = [1 -10 15];

%
% Use polyder to calculate
% q(x)=\frac{d}{dx} \left[ a(x)b(x) \right].

q = polyder(a,b)

% The result is
% q(x)=6x^5-60x^4+140x^3-90x^2+22x-110.
% Copyright 2015 The MathWorks, Inc.