Perturbation vs X - What's the difference?
perturbation | x |
(uncountable) Agitation; the state of being perturbed
(countable) A small change in a physical system, or more broadly any definable system (such as a biological or economic system)
(countable, astronomy, physics) Variation in an orbit due to the influence of external bodies
The twenty-fourth letter of the .
Image:Latin X.png, Capital and lowercase versions of X , in normal and italic type
Image:Fraktur letter X.png, Uppercase and lowercase X in Fraktur
Roman numerals
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