distance from the center   2 videos

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  Limits: A Graphical Approach

  Calculus Limits and Continuity

  How to determine one-sided and two-sided limits from the graph of a function.

  one sided limits two sided limits limit does not exist piecewise functions left hand limit right hand limit graph graphical approach
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  Optimization Using the Second Derivative Test

  Calculus Applications of the Derivative

  How to compute the average velocity of an object moving in one dimension from a graph of its position vs. time.