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Многие студенты боятся экзаменов. Однако, если они - честолюбивые и трудолюбивые, то они преуспеют. 

or

Множество студентов боятся экзаменов. Но если они стремятся к успеху и работают много,...

In ‘Annabel Lee’ by Edgar Allan Poe, structure is played off against language. A morbid narrative – the death of a young girl, with whom the poet is clearly infatuated – is penned in lines of verse that b...

logF=logG+logH−log(1/M)−2*logR Simplify RHS using law of logarithms, 

logF=log(GH)−log(1/M)−2logR             using law of addition
logF=log(GHM)−2logR                      ...

  Water insecurity is defined as the lack of a reliable source of water, of appropriate quality and quantity to meet the needs of the local human population and environment. It is often caused by water sc...

This question requires differentiating the equation to find where its gradient is equal to zero. Differentation is done via a simple equation -->  if y = xⁿ then dy/dx = nx^n-1