(Sin)' = Cos
(Cos)' = -Sin
When Sin = 1, then (Sin)' = Cos = 0
When Sin = 0, then (Sin)' = Cos = 1 or -1
When Sin = -1, then (Sin)' = Cos = 0
What does this mean?
In a
sine wave, the derivative (meaning "rate of change") of Sin is greatest when it is closest to equilibrium.
The closer to the middle ground that a wave is, the greatest its rate
(
Read more... )