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Find the minimum value of the function, f(x)= x^2 + 5x + 2, where x belongs to the set of Real numbers

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 derivativ...
PP
Answered by Pavlos P. • Maths tutor
3914 Views

How does Hardy make the opening chapters of “Tess of the D'Urbervilles” such a dramatic and engaging start to the novel?

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 West...
NS
7351 Views

Describe how acetylcoenzyme A is formed in the link reaction.

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 transferred ...
AP
19632 Views

Describe and explain how a tiger with striped fur may have evolved from a non-striped ancestor

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 extern...
RD
Answered by Ruchi D. • Biology tutor
11830 Views

When to use “depuis” and when to use “il y a” with time expressions

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 a teacher sin...
FH
Answered by Faye H. • French tutor
2769 Views