Simple taylor expansion, please help

  • Thread starter ninevolt
  • Start date
  • #1
21
0

Main Question or Discussion Point

I want to show this taylor expansion:

[tex]\frac{1}{\sqrt{1+{x}^{2}}} \rightarrow x^2[/tex]


what I keep getting is something to the x^3 could some one please help me with this simple expansion?
 

Answers and Replies

  • #2
(1+x^2)^-0.5
= 1-0.25(X^2) there is no x^3 okay
 

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