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Using the chain rule, we know that dy/dx = dy/dt . dt/dx Therefore we differentiate both equations with respect to t:dx/dt = -4dy/dt = -2/(t^2)therefore dy/dx = -1/4 . -2/(t^2)dy/dx = 1/(2t^2) ... (we kno...

In French, we use the pluperfect tense when one action occurred before another action. In English, we recognise the pluperfect by "had + the past participle." For example:"She had already p...

DNA helicase acts to unwind the 2 strands of DNA by breaking the Hydrogen bonds between them. This means that free nucleotide bases can be attracted and bind to the exposed bases.

First, it is key to remember that revision and exam preparation does not have to be reserved for the last few months before the exam. Revision notes work best when they are continuously consolidated throu...

'Qui' and 'que' are both relative pronouns, which we use to replace the subject of a sentence, and hence avoid excessive repetition which might seem unnatural in that sentence. To be able to know when to ...