Share this entry

Share this page

de Moivre's theorem

Line breaks: de Moivre's the|orem
Pronunciation: /də ˈmwɑːvr(ə)
 
/

Definition of de Moivre's theorem in English:

noun

Mathematics
A theorem which states that (cos θ + i sin θ)n = cos nθ + i sin nθ, where i is the square root of −1.
Example sentences
  • The de Moivre's theorem is used very often in electrical engineering and physics to determine things like the phase shifts of alternating currents.

Origin

early 18th century: named after Abraham de Moivre (1667–1754), French-born mathematician, fellow of the Royal Society.

Definition of de Moivre's theorem in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day emulous
Pronunciation: ˈɛmjʊləs
adjective
seeking to emulate someone or something