powerrule
nounUK /ˈpaʊə ruːl/
US /ˈpaʊər ruːl/
A math rule that tells you how to find the derivative of a number raised to a power.
Using the power rule, the derivative of x cubed is three x squared.
RELATED WORDS
OTHER MEANINGS
2. A rule in a game or contest that gives extra power or advantage to a player.
The new power rule lets the winning team start with an extra point.
3. A principle that grants authority or control to a person or group.
The committee adopted a power rule to let the chair make quick decisions.
4. A guideline in a system that determines how power is distributed or used.
The power rule in the club's bylaws limits how long a president can serve.