| 11. | Imaginary numbers aren't imaginary, they're just as real ( or unreal ) as other numbers.
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| 12. | Animal lovers will still receive pleas from groups who use imaginary numbers to gain donations.
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| 13. | And imaginary numbers are really good for things that are representable by a differential equation.
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| 14. | Imaginary numbers are often used to express frequency domain phenomena to time-domain creatures as ourselves.
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| 15. | Their budget was built on imaginary numbers, critics said.
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| 16. | It requires the use of the natural exponent e \, and the imaginary number i \,.
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| 17. | It seemed like a kind of circumstatial justification of the idea that imaginary numbers represent time.
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| 18. | Below a certain frequency ( the cut-off frequency ) the propagation constant becomes an imaginary number.
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| 19. | Both imaginary numbers have equal claim to being the number whose square is " 1.
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| 20. | He is however very eager to understand imaginary numbers, which are mentioned in his maths lesson.
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