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Firstly we need to use product rule to find the dy/dx of the left hand side (LHS). Using implicit differentiation, we know the differential of y^2 is 2y(dy/dx). Then use to product rule to obtain the dy/d...

mathematical derivation

There are three parts to the answer so base the paragraphs around this, for example the first answer could be, "Because France had been invaded twice by Germany in 1870 and 1914 and he wanted to prev...

Learning vocabulary is a big part of learning a new language but there are lots of ways that you can make this easier for yourself.

Creating a sentence with the new word in or drawing a picture of ...

Each French noun (an object word such as 'boy', 'table' or 'river') has a gender - they are either masculine or feminine. This may seem strange to a native English speaker as this is not a feature of our ...