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The equations for an arithmetic sequences are 1) Un = u1 + (n - 1)d 2) Sn = n/2(2*u1 + (n-1)d) 3) Sn = n/2(u1 + un)

The first step is to calculate the common difference, d. This is done using the f...

It's a hot and heavy controversy in the grammar world! Basically, an Oxford comma is a type of serial comma - which is a comma that separates things in a list. The Oxford comma comes specifically before t...

Firstly, before approaching the poem, note down the form of the poem, including the number of stanzas, the number of lines in the stanza and the rhyme scheme (if there is one). It is then important to re-...

In a real 2-Dimensional function f(x) on the X-Y plane, we have the following relations between these concepts: i) f'(x) is continuous if and only f(x) is differentiable; in fact, the continuity of f'(x) ...

Firstly, the subjunctive is a mood just like the conditional or the indicative. Within the subjunctive there are four tenses; the present, the past, the imperfect and the pluperfect. The latter two tenses...