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WikiCards · Card list · Science cards · Lambert W function
Rare card · Science
Lambert W function, a Rare card
In mathematics, the Lambert W function, also called the omega function or product logarithm, is a multivalued function, namely the branches of the converse relation of the function f = w e w, where w is any complex number and e w is the exponential function.
- Rarity
- Rare
- Domain
- Science
- ATK
- 84
- DEF
- 82
- Power
- 166
- Wikipedia reads a year
- 210,000
Power 166 (ATK + DEF): stronger than 85 % of WikiCards cards.
Lambert W function quiz: 3 questions
Three questions on the Lambert W function card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
Building on Lambert's work, Leonhard Euler ______ the W function per se in 1783.
Answer
described. Building on Lambert's work, Leonhard Euler described the W function per se in 1783. From the Lambert W function article on Wikipedia.
In which decade?
The function is named after Johann Lambert, who considered a related problem in ____.
Answer
1750s. The function is named after Johann Lambert, who considered a related problem in 1758. From the Lambert W function article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Jewish history. Jewish history 93 · Lambert W function 84 · Academy of Motion Picture Arts and Sciences 81 · Georges Lemaître 78 ATK in WikiCards.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- The function is named after Johann Lambert, who considered a related problem in 1758.
- Building on Lambert's work, Leonhard Euler described the W function per se in 1783.
- For each integer k there is one branch, denoted by W k, which is a complex-valued function of one complex argument.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Lambert W function article was read about 210,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 84 and blocks with 82: each hit it takes is cut by 33 %.
How to get Lambert W function
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Lambert W function in the power ranking, all domains together.
- Belarusian languageRare · Society · ATK 83 DEF 83
- Georges LemaîtreRare · History · ATK 78 DEF 88
- Jewish historyRare · History · ATK 93 DEF 73
- Mikhail BakuninRare · History · ATK 78 DEF 88
- TaoRare · Society · ATK 79 DEF 87
- MicrowaveUncommon · Science · ATK 81 DEF 85
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Credits
Text : Wikipedia, Lambert W function (revision), CC BY-SA 4.0. Photo : WalkingRadiance, CC BY-SA 4.0, Wikimedia Commons.
