Original
If we let {{MATH_135}}, the size of the interval will go to {{MATH_136}}.
As {{MATH_137}} approaches {{MATH_138}}, we are computing the average velocity on smaller and
smaller time intervals, and the limit of these average velocities is called
the {{CMD_139}}instantaneous velocity{{CMD_140}} at {{MATH_141}}.
Limits will allow us to compute instantaneous velocity.
{{CMD_142}}{{CMD_143}}{{CMD_144}}
As before, suppose {{MATH_145}} denotes the position, at the time {{MATH_146}}, of an object moving along a line.
Let {{MATH_147}} be the average velocity on the interval {{MATH_148}} if {{MATH_149}} and on interval {{MATH_150}} if {{MATH_151}}.
The {{CMD_152}} at the time {{MATH_153}} is given by
{{MATH_154}}