Derivative

#math #machine-learning #interview

Derivative

A derivative $f^{'}$ of a function $f$ is a value that describes how fast $f$ is growing or decreasing.

If $f^{'}$ is positive at point c, then $f$ is growing on that point c
If $f^{'}$ is negative at point c, then $f$ is decreasing on that point c
If $f^{'}$ is 0 at point c, then $f$ is on Local Minima or Global Minima

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