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4. (a) (i) Calculate (4 + 10i)². Answer: (ii) Hence, and without using a calculator, determine all solutions of the quadratic equation 2 + 6iz + 12 – 20i = 0. Answer: (b) Determine all solutions of 22 + 67 + 5 = 0.

4. (a) (i) Calculate (4 + 10i)². Answer: (ii) Hence, and without using a calculator, determine all solutions of the quadratic equation 2 + 6iz + 12 – 20i = 0. Answer: (b) Determine all solutions of 22 + 67 + 5 = 0.

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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4. (a) (i) Calculate (4+ 10i)?. Answer: (ii) Hence, and without using a calculator, determine all solutions of the quadratic equation 2? + 6iz + 12 – 20i = 0. Answer: (b) Determine all solutions of 22 + 67 + 5 = 0.
Transcribed Image Text:4. (a) (i) Calculate (4+ 10i)?. Answer: (ii) Hence, and without using a calculator, determine all solutions of the quadratic equation 2? + 6iz + 12 – 20i = 0. Answer: (b) Determine all solutions of 22 + 67 + 5 = 0.
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