derivative

dérivé, peu original

Tiré ou développé à partir d’autre chose, plutôt que nouveau ou original.

En anglais simple : Taken or developed from something else, rather than being new or original.

• The film feels derivative.
• Her early paintings were derivative of older artists' work.
• Critics called the novel entertaining but highly derivative.

Comment l'utiliser : derivative of something (His style is derivative of earlier crime writers.)

Synonymes : unoriginal, imitative, derived

Contraires : original

Expressions courantes : derivative work, derivative style, highly derivative

dérivé

Chose obtenue à partir d’une autre, notamment une substance chimique produite en modifiant une autre substance.

En anglais simple : Something made from another thing, especially a chemical made by changing another chemical.

• This compound is a sugar derivative.
• The laboratory tested three derivatives of the original substance.
• Some oil derivatives are used to make plastics.

Comment l'utiliser : a derivative of something (This medicine contains a derivative of a natural plant chemical.)

Synonymes : derived product

Expressions courantes : a chemical derivative, a derivative of something, an oil derivative

dérivée

Fonction mathématique qui indique la vitesse de variation d’une autre fonction en chaque point.

En anglais simple : A mathematical function that shows how fast another function changes at each point.

• Find the derivative of this function.
• The derivative describes how quickly the curve rises or falls.
• We calculated first and second derivatives in class.

Comment l'utiliser : the derivative of a function (The derivative of this function is constant.); derivative with respect to a variable (Find the derivative with respect to time.)

Synonymes : derived function

Expressions courantes : first derivative, calculate the derivative, derivative of something

dérivée

Nombre indiquant la vitesse de variation d’une fonction mathématique en un point précis.

En anglais simple : The number showing how fast a mathematical function changes at one particular point.

• The derivative here is positive.
• At the highest point, the derivative equals zero.
• What is the derivative of this function at three?

Comment l'utiliser : the derivative at + point (The derivative at this point is zero.)

Synonymes : instantaneous rate of change

Expressions courantes : derivative at zero, a positive derivative, a negative derivative