Numerical Methods for Engineers
Numerical Methods for Engineers
7th Edition
ISBN: 9780073397924
Author: Steven C. Chapra Dr., Raymond P. Canale
Publisher: McGraw-Hill Education
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Chapter 7, Problem 14P

Perform the identical MATLAB operations as those in Example 7.7 or use a software package of your choice to find all the roots of the polynomial

f ( x ) = ( x + 2 ) ( x + 5 ) ( x 6 ) ( x 4 ) ( x 8 )

Note that the poly function can be used to convert the roots to a polynomial.

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1. Sketch the following sets and determine which are domains: (a) |z−2+i| ≤ 1; - (c) Imz> 1; (e) 0≤ arg z≤ л/4 (z ± 0); Ans. (b), (c) are domains. (b) |2z+3| > 4; (d) Im z = 1; - (f) | z − 4| ≥ |z.
So let's see, the first one is the first one, and the second one is based on the first one!!
4. In each case, sketch the closure of the set: (a) -л 0.
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