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Firstly, we note that z being a complex number can be expressed in the form z = a + bi. If we then take the complex conjugate of this expression, the real numbers remain the same (as they are their own c con...

The current account is a section in the Balance of Payments, which shows a country's transactions with goods, services and income. It is made up of four different parts. 1) The balance of trade in goods 2) T...

dy/dx represents the gradient of a curve. The d represents an infinitesimally small range so it is essentially as though you are doing change in y over change in x like you would for a y = mx +c graph but ov...

Although it may seem that the gender of French nouns is random and you have to memorise each, there is a simple way of using the word's ending to gauge it's gender. Masculine Endings: -age -ment -il , -ail ,...

Say we have an equation with the product of two subjects in the form f(x) = u(x)v(x). Differentiating is simple, we would just multiply the differential * of u(x) by v(x) and add the differential of v(x) tim...