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We first differentiate f(x), and we get f'(x)=2x + 5. We then set this equal to 0 and then solve for x. We get that xmin= -2.5. We check whether this was indeed a minimum, by calculating the second deriva...

Set in the heart of Wessex, a ‘dream country’ that is almost literally a world apart from modern civilization, with such redolent names a Casterbridge or Kingsbere, Hardy’s edenic imitation of the South W...

The link reaction occurs in the mitochondrial matrix. In the first step, carbon dioxide and hydrogen are removed from two pyruvate molecules, producing two acetyl groups. The hydrogen removed is transferr...

Natural selection: Mutations (e.g. of pigment gene, and of regulatory genes) creating variability between members of the same species. Selection pressure of prey availability - Selection pressures are ext...

1.    Depuis I.        If you want to say you have done something since a certain point in time, you use depuis with the present tense. o  Je travaille comme professeur depuis 2017 >> I’ve worked as...