Represent the expression z3 -2z2 + 3 – 5i as a row vector of coefficients, and store this in a variable compoly. Use the roots function to solve z3 -2z2 + 3 – 5i = 0. Also, find the value of compoly when z = 2 using polyval
belongs to book: MATLAB: A Practical Introduction to Programming and Problem Solving|Stormy Attaway|Fourth Edition| Chapter number:14| Question number:24.14
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Matlab
>> compoly = [1 -2 3-5i];
>> croots = roots(compoly)
croots =
2.3010 + 1.9216i
-0.3010 - 1.9216i
>> val = polyval(compoly,2)
val =
3.0000 - 5.0000i
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