Solution: Problem1-55
Forum » Chapter 1 / Solutions » Solution: Problem1-55
Started by: siromasiroma
On: 1222308579|%e %b %Y, %H:%M %Z|agohover
Number of posts: 1
rss icon RSS: New posts
Unfold all | Fold all | +More options
fold
Solution: Problem1-55
siromasiroma 1222308579|%e %b %Y, %H:%M %Z|agohover
Even function
f(x)=f(-x)
(1)
f(-x)=\frac{e^{-x}}{(1 \pm e^{-x})^2}=\frac{e^{-x}}{(1\pm\frac{1}{e^x})^2}=\frac{e^{-x}e^{2x}}{(e^x\pm1)^2}=\frac{e^x}{(1 \pm e^x)^2}=f(x)

QED

reply | options
unfold Solution: Problem1-55 by siromasiroma, 1222308579|%e %b %Y, %H:%M %Z|agohover
New post
Page tags: pdftag
Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-Share Alike 2.5 License.