sum of polynomials help

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Raiven Balderas 2018-4-2

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回答： Walter Roberson 2018-4-2

Make a Matlab function called polyadd.m that accepts as input the coefficients of two polynomials and outputs the coefficients of the sum of the two polynomials. The first line should read:

function a = polyadd(c,d)

please help

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Walter Roberson 2018-4-2

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Answer 1

Walter Roberson 2018-4-2

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Figure out which vector is shorter. Put enough zeros at the beginning of it to make the two the same length. Add the two, which will now be the same length.

Optionally look at the results and remove leading 0, just in case the coefficients of the two cancel out.