Originally Posted by

**joatmon** This the very last part of a long, multi-part problem. I am trying to find the first positive inflection point to Si(x). I took the second derivative of Si(x), set this equal to zero, and used Newton's method to find the x-coordinate of the inflection point (which was 4.4934). All I have left to do is to find the y coordinate. I can do this easily with a graphing calculator or Mathematica, but I think that we have to do it the long way.

Is there an easier approach?

Thanks.