Can you handle imaginary numbers?

Algebra Level pending

How does multiplication over addition imply over imaginary numbers?


The answer is 1.

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1 solution

Since i=i, i^2= -1, i^3=-i and i^4=1, then the product of i, i^2, i^3 and i^4 is equal to -1. The same pattern with the next 4 imaginary numbers. Hence, i...i^8 is equal to positive one. Note that i^9, i^10 and i^11 is equal to -1. Then the numerator comes up with -1.

The denominator deals with addition. Since you already know the values, the sum of i, i^2, i^3 and i^4 is equal to 0. The same as the next 4 imaginary numbers. But note that i^9 is equal to i; i^10 is equal to -1; and i^11 = -i. Then, it's sum will be -1.

-1 divided by -1 is a positive 1. :D

Then why your correct answer is -1?

思澄 馮 - 6 years, 9 months ago

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