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When you are faced with an integral which is a product, such as x.cos(x) , you may be able to integrate it by parts. The statement of the integration by parts is that: ∫u(dv/dx)dx = uv-∫v(du/dx)dx So if you ...

A quadratic expression is of the form ax ​2 +bx+c. It is often useful to know what values of x will make the expression equal to 0; these are known as the roots of the equation. An easy way of seeing what th...

Current is the rate of flow of charge in a circuit; you can imagine the flow of electrons as water flowing through a pipe. If the pipe splits into two, some of the flow will go through one pipe and some thro...

Parametric equations are a set of equations which both depend on the same variable, such as t. An example of this would be: x = 2t 2 ​+1 and y = t ​4 ​-2 As the value of t changes the equations will give you...

Countries they operate in + Provide employment opportunities in developing nations - Coca-Cola factory in Egypt employs 12000 people and created 120000 indirect jobs + Help developing nations enter the globa...