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What is the 'chain rule'?

The chain rule is incredibly useful when differentiating compositions of funcions. 

 

Until now you have really only met dy/dx as your derivative. By imagining dy/dx as a fraction, you...

JA
Answered by James A. Maths tutor
4418 Views

When do I use être or avoir in the past?

Etre is used with verbs of motion such as Aller/Entrer/ Arriver. The full list is easy to remember using the MRS VANDERTRAMP technique.

M-Monter
R-Retourner
S-Sortir
V- Venir...

CR
3552 Views

When does the past participle change form if conjugated with the verb avere?

If the verb avere is in a compound past tense (passato prossimo/trapassato prossimo) and is preceded by a direct object pronoun (pronome diretto-mi, ti, lo, la, li, le) the verb avere must agree. For ...

CR
3574 Views

What is the difference between the passato prossimo and the imperfetto tenses?

The passato prossimo is used for completed actions. Oggi ho mangiato una mela-Today I ate an apple. Whereas the imperfetto is used for repeated or descriptive actions. Quando ero piccolo andavo a scuo...

CR
3555 Views

What is the subjunctive?

The subjunctive is a mood which is usually used to express uncertainty, doubt and feelings as opposed to the indicative mood which is used to demonstrate certainty. For example, je sais que Charles va...

CR
3369 Views

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