Verify that z 2 + 4i is a solution of z2 + 6z - 40i = 0. Is 2+ 41 also a solution?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Question
**Problem Statement:**

1. Verify that \( z = 2 + 4i \) is a solution of the equation \( z^2 + 6z - 40i = 0 \).

2. Is \( 2 + 4i \) also a solution?

3. Does your answer contradict Euler’s 1742 observation that solutions to polynomial equations with real coefficients come in conjugate pairs?

---

**Explanation:**

This text queries the reader to verify a given complex number as a solution to a polynomial equation. 

- **Complex Number Solution:** The equation \( z^2 + 6z - 40i = 0 \) suggests verifying whether the complex number \( z = 2 + 4i \) satisfies it.
  
- **Complex Conjugate:** The question raises whether the solution agrees with Euler's observation about solutions to polynomials having real coefficients, implying the expectation of complex conjugate pairs as solutions.
  
**Note:** The expression does not contain any graphs or diagrams, focusing entirely on mathematical analysis and algebraic verification.
Transcribed Image Text:**Problem Statement:** 1. Verify that \( z = 2 + 4i \) is a solution of the equation \( z^2 + 6z - 40i = 0 \). 2. Is \( 2 + 4i \) also a solution? 3. Does your answer contradict Euler’s 1742 observation that solutions to polynomial equations with real coefficients come in conjugate pairs? --- **Explanation:** This text queries the reader to verify a given complex number as a solution to a polynomial equation. - **Complex Number Solution:** The equation \( z^2 + 6z - 40i = 0 \) suggests verifying whether the complex number \( z = 2 + 4i \) satisfies it. - **Complex Conjugate:** The question raises whether the solution agrees with Euler's observation about solutions to polynomials having real coefficients, implying the expectation of complex conjugate pairs as solutions. **Note:** The expression does not contain any graphs or diagrams, focusing entirely on mathematical analysis and algebraic verification.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,