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A special rule, the chain rule, exists for differentiating a function of another function (finding dy/dx). Consider the expression cos x 2 . We call such an expression a ‘function of a function’. We could id...

√75 = 5√3, therefore x√48 = √75 + 3√3 x√48 = 5√3 + 3√3 x(√16 x √3) = 5√3 + 3√3 4x√3 = 5√3 + 3√3 4x√3 = (5 + 3)√3 4x√3 = 8√3 x√3 = 2√3 x = 2

The refractory period is composed of two parts. The first part is the absolute refractory period in which another action potential cannot be stimulated in the nerve. In the relative refractory period that fo...

To understand the difference between these two common scales, we need to think about where all scales come from in the first place. The typical major scale, containing seven notes is where all scales will be...

A u-shaped valley starts life at high altitude near the peaks of a mountain range. As snow falls, it gradually compacts due to pressure and turns into ice. As this ice gets heavier and heavier, it becomes a ...