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The stationary point of a curve is where it changes direction, that is the gradient goes from pos...
First, remember the compound angle formula for cosine:
Recall that a geometric progression is a sequence (a_n) defined ...
The chain rule is incredibly useful when differentiating compositions of funcions.
Until now you have really only met dy/dx as your derivative. By imagining dy/dx as a fraction, you...
There are two ways you can take the derivative of a^x.1) Let y = a^x now we're trying to find dy/dx2)ln(y) = xln(a) take logs of both sides and use log rules3)(dy/dx)...
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