imaginary number; fictitious figure
Meanings
2 senses · 6 examplesnoun
imaginary number (in complex numbers a+bi where b≠0)
In mathematics, specifically complex number theory. When a=0 and b≠0, it is called a purely imaginary number (纯虚数).
In the complex number 1−3i, the real part is 1 and the imaginary part is −3, so this is an imaginary number.
5i is a purely imaginary number because its real part is zero.
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Electrical engineers often use imaginary numbers to analyze AC circuits.
noun
fictitious number; unreal figure; inflated figure
Used in accounting, statistics, or reporting to describe fabricated, inflated, or non-existent numbers, often to deceive or exaggerate.
There are many fictitious numbers in this financial report that don't reflect the company's true situation.
Statistical departments strictly prohibit filling in false numbers in reports.
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Fictitious growth figures concealed the company's actual losses.