http://www.ck12.org Chapter 2. Derivatives
Figure 2
msec= f(t^1 t 1 )−−tf 0 (t^0 )Instantaneous Rate of Change
The instantaneous rate of change ofx=f(t)at the timet 0 is the slopemtanof the tangent line at the timet 0 on the
graph.
Figure 3
mtan=f′(t 0 ) =t 1 lim→t 0 f(t^1 t) 1 −−tf 0 (t^0 )