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WikiCards · Card list · Science cards · Derivative test
Common card · Science
Derivative test, a Common card
In calculus, a derivative test uses the derivatives of a function to locate the critical points of a function and determine whether each point is a local maximum, a local minimum, or a saddle point.
- Rarity
- Common
- Domain
- Science
- ATK
- 59
- DEF
- 26
- Power
- 85
- Wikipedia reads a year
- 13,000
Power 85 (ATK + DEF): stronger than 25 % of WikiCards cards.
The facts on the card
The card carries these facts from its Wikipedia article.
- Derivative tests can also give information about the concavity of a function.
- The usefulness of derivatives to find extrema is proved mathematically by Fermat's theorem of stationary points.
Why it is Common
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Derivative test article was read about 13,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 59 and blocks with 26: each hit it takes is cut by 10 %.
How to get Derivative test
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.
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Credits
Text : Wikipedia, Derivative test (revision), CC BY-SA 4.0. Photo : Mozo, Public domain, Wikimedia Commons.
