Top answers

Passé Composé - 'Etre' or 'Avoir'?

In English, in the past tense, we use a combination of an auxillary verb and a main verb in the past participle form. In the example 'I have eaten', 'have' acts as the auxillary verb and 'eaten' is the past ...
RC
Answered by Rosie C. • French tutor
17221 Views

What is the chain rule, product rule and quotient rule and when do I use them?

The chain rule, product rule and quotient rule are all 3 methods of differentiating complex functions. Chain rule The chain rule is as follows: (dy/dx) = (dy/dz).(dz/dx) or D{f(g(x))}/dx = f'(g(x)).g'(x) The...
HK
Answered by Hakeem K. • Maths tutor
13353 Views

Why does the thickness of the heart's chamber walls vary?

A chamber wall's thickness is directly linked to its function. Each of the 4 chambers has a different function and so, they each have different wall thickness. The more work a chamber has to do, the thicker ...
TE
Answered by Tasnim E. • Biology tutor
54902 Views

What is the difference between structural isomers and stereoisomers?

Structural isomers have the same molecular formula but a different bonding arrangement, or connectivity, between these atoms. This leads to different physical and chemical properties between stereoisomers. A...
JN
Answered by James N. • Chemistry tutor
49932 Views

Which fits best : perfective or imperfective?

The Russian verb has 3 tenses and 2 aspects . Aspects describe different qualities of an action – it is either acting (the process of doing something - Imperfective ) or the result of an action (after someon...
LU
Answered by Leo U. • Russian tutor
5065 Views