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First we must ensure that the differential is i the standard form of y' + p(x) y = f(x)The we use the integration factor I(x) = e to the integral of p(x)we then realise that if we differentiate this we will ...

So to integrate this function we would need to use a method called Integration by parts that you may have come across in your studies. This is where we separate the function into two parts to make it easier ...

Suburbanisation is a process that occurs in urban areas alongside urbanisation, counter-urbanisation and urban resurgance. As people's prosperity increases, they search for a higher quality of life away from...

The imperfect subjunctive can be introduced by four different tenses: the preterite, the imperfect, the conditional and the past perfect. It is often used in clauses like "If I were younger, I would tra...

This is a tricky grammatical question that is asked a lot by students, but there are several differences between the two. Perhaps the most important difference is that el pretérito is used to refer to single...