Calculus Course/Rate of Change

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Rate of Change[edit]

Rate of Change is used to describe the ratio of a change in one variable compare to a change of another variable

If there is a function f(x) = y then the rate of change of the function f(x) correspond to the rate of change of variable z is

\frac{\Delta y}{\Delta x} = \frac {\Delta f(x)}{\Delta x}

Example[edit]

If there are two points (1,3) and (2,7))

\frac{\Delta y}{\Delta x} = \frac {\Delta f(x)}{\Delta x} = \frac{7-3}{2-1} = 4