Problem with a 'simple' equation?

  • Thread starter rudderbird
  • Start date
  • #1
https://scontent-a-sin.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/q83/s720x720/960276_419358564889369_6107296607749832321_n.jpg?oh=848f1c866e20f0178f835cfec07b41b4&oe=555E6332

Okay so, the main equation was this-
i = E/R + Ae^[-(RT)/L]

My problem is with the equation no. 2.
How do we get e^t/lamda when lamda = R/L? It should be e^t*lamda and where did the minus symbol go (the one in the power of e). And to equate i = i not it has to be (1 - e^t/lamda) = 1 and if t tends to infinity that's not possible in any way!

Please tell me where I am doing wrong! HELP!
 

Answers and Replies

  • #2
Stephen Tashi
Science Advisor
7,739
1,525
The page has an error. Lambda should be L/R. The typography of the book puts a minus sign on the same level as the line for a fraction, so I think the exponent that looks like [itex] \frac{t}{\lambda} [/itex] is really [itex] \frac{-t}{\lambda} [/itex]. To be correct, it should have the minus sign.
 
  • #3
Thanks so much! I just needed a confirmation!!
 

Related Threads on Problem with a 'simple' equation?

Replies
3
Views
675
Replies
2
Views
2K
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
2
Views
2K
Replies
6
Views
4K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
5
Views
603
Replies
2
Views
760
Top