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Un gâteau

Strawberry cake

This is a common question on A2 Maths papers as it tests both the ability to use the chain rule and the ability to differentiate natural logarithms. y = ln(6x) Alarm bells should start ri...

De Moivre's theorem states that (cosø + isinø)ⁿ = cos(nø) + isin(nø). Assuming n = 1 
    (cosø + isinø)¹ = cos(1ø) + isin(1ø)
which is true so ...

This is one of the trickiest aspects of learning how to use verbs in French, since English often lacks the clear distinction between the imperfect (in French expressed with verb forms with endings like '-...