How to do polynomial differentiation
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How to do polynomial differentiation without using known matlab commands
2 个评论
Guillaume
2018-3-28
Why wouldn't you want to use known matlab commands. And for that matter, what are unknown matlab commands then?
Raiven Balderas
2018-3-28
采纳的回答
Roger Stafford
2018-3-28
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);
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Walter Roberson
2018-3-28
0 个投票
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.
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