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We use the rule that if y = x^n then dy/dx = n*x^(n-1) which is valid whether or not n is an integer. 

We also use that differentiation is a linear operation, which means that we can diff...

Power of supplier- How high the supplier's ability is to increase prices, which is determined by how many other companies they supply, as well as the uniqueness of the product. If there are fewer supplier...

Stimulated emission occurs under the specific circumstances of a population inversion, that is, when there are more electrons in a higher energy level than one below it. There will be a certain energy ...

When a wire moves through a magnetic field the wire cuts through the magnetic field lines. This cutting through gives a force on the electrons in the wire, pushing them along, and these moving electron...

What is it?The cosine rule is a tool to find the size of an angle or the length of a side in a triangle.When to use it?- When we are given 2 sides and an angle- When we a...