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These two tenses both express actions and states in the past. However, the imparfait should be used in cases of repetitive situations, a description or an action without a limited time frame. For instance...

the connections within the retina explain this. there is a different density and distribution of different types of cells in the retina - the fovea, in the centre of the eye, has a high density of cone ce...

Using integration by parts split it into v'=(1/x^3) and u=ln(x). v=-1/2x^2 and u'=1/x. Integral ln(x)/(x^3) = u*v - Integral u'*v = -ln(x)*1/2x^2 - 1/4x^2 + c

In order to integrate the expression we must first rewrite it in terms of Partial Fractions i.e. A/x and B/(2-x), so that when multiplied together we have a fraction with same denominator as the expressio...

A democratic deficit is a great big gaping hole where public engagement with political processes should be. This means any area where citizens like you and me should have a say but don't. Since t...