(2i)^5

2 min read Jun 16, 2024
(2i)^5

Understanding (2i)^5

This article aims to explain how to simplify the expression (2i)^5, focusing on the properties of imaginary numbers and exponents.

Imaginary Numbers and Exponents

i represents the imaginary unit, defined as the square root of -1. It's crucial to remember that i² = -1.

Exponents indicate repeated multiplication. For example, (2i)^5 means multiplying (2i) by itself five times:

(2i)^5 = (2i) * (2i) * (2i) * (2i) * (2i)

Simplifying the Expression

Let's break down the simplification:

  1. Separate the real and imaginary components: (2i)^5 = (2^5) * (i^5)

  2. Calculate the real component: 2^5 = 32

  3. Simplify the imaginary component: i^5 = i^4 * i Since i^4 = (i^2)^2 = (-1)^2 = 1, we get: i^5 = 1 * i = i

  4. Combine the components: (2i)^5 = 32 * i = 32i

Conclusion

Therefore, (2i)^5 simplifies to 32i. This process demonstrates how to handle exponents with imaginary numbers, utilizing the key property of i² = -1.

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