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If omega is a complex cube roots of uni...

If `omega` is a complex cube roots of unity, then find the value of the `(1+ omega)(1+ omega^(2))(1+ omega^(4)) (1+ omega^(8))`… to 2n factors.

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To solve the problem, we need to find the value of the expression \( (1 + \omega)(1 + \omega^2)(1 + \omega^4)(1 + \omega^8) \ldots \) up to \( 2^n \) factors, where \( \omega \) is a complex cube root of unity. ### Step-by-Step Solution: 1. **Understanding the Roots of Unity**: The complex cube roots of unity are given by: \[ \omega = e^{2\pi i / 3}, \quad \omega^2 = e^{4\pi i / 3}, \quad \text{and} \quad \omega^3 = 1. \] We also know that: \[ 1 + \omega + \omega^2 = 0 \implies 1 + \omega = -\omega^2 \quad \text{and} \quad 1 + \omega^2 = -\omega. \] 2. **Identifying the Powers of Omega**: Notice that the powers of \( \omega \) repeat every three terms since \( \omega^3 = 1 \). Therefore: - \( \omega^4 = \omega \) - \( \omega^5 = \omega^2 \) - \( \omega^6 = 1 \) - \( \omega^7 = \omega \) - \( \omega^8 = \omega^2 \) - and so on. 3. **Grouping the Terms**: The terms \( (1 + \omega^k) \) can be grouped based on the powers of \( \omega \): - For \( k \equiv 0 \mod 3 \): \( 1 + \omega^k = 1 + 1 = 2 \) - For \( k \equiv 1 \mod 3 \): \( 1 + \omega^k = 1 + \omega = -\omega^2 \) - For \( k \equiv 2 \mod 3 \): \( 1 + \omega^k = 1 + \omega^2 = -\omega \) 4. **Counting the Factors**: Since we have \( 2^n \) factors, we can determine how many of each type we have: - There will be \( \frac{2^n}{3} \) terms of \( 1 + 1 \) (which contribute \( 2 \)). - There will be \( \frac{2^n}{3} \) terms of \( 1 + \omega \) (which contribute \( -\omega^2 \)). - There will be \( \frac{2^n}{3} \) terms of \( 1 + \omega^2 \) (which contribute \( -\omega \)). 5. **Calculating the Product**: The product can be simplified as follows: \[ (1 + \omega)(1 + \omega^2)(1 + \omega^4)(1 + \omega^8) \ldots = 2^{\frac{2^n}{3}} \cdot (-\omega^2)^{\frac{2^n}{3}} \cdot (-\omega)^{\frac{2^n}{3}}. \] This simplifies to: \[ 2^{\frac{2^n}{3}} \cdot (-1)^{\frac{2^n}{3}} \cdot \omega^{-\frac{2^n}{3}} \cdot \omega^{-\frac{2^n}{3}} = 2^{\frac{2^n}{3}} \cdot (-1)^{\frac{2^n}{3}} \cdot \omega^{-\frac{2^{n+1}}{3}}. \] 6. **Final Result**: Since \( \omega^3 = 1 \), the contributions from \( \omega \) will cycle through the cube roots of unity, ultimately leading to a product that simplifies down to: \[ 1. \] Thus, the final answer is: \[ \boxed{1}. \]

To solve the problem, we need to find the value of the expression \( (1 + \omega)(1 + \omega^2)(1 + \omega^4)(1 + \omega^8) \ldots \) up to \( 2^n \) factors, where \( \omega \) is a complex cube root of unity. ### Step-by-Step Solution: 1. **Understanding the Roots of Unity**: The complex cube roots of unity are given by: \[ \omega = e^{2\pi i / 3}, \quad \omega^2 = e^{4\pi i / 3}, \quad \text{and} \quad \omega^3 = 1. ...
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