(relatively) Simple math question

[Koenigsegg]

I have..

(e^2rt - 1)/ (e^2rt+1)

How does that reduce to...

(e^rt - e^-rt)/(e^rt+e^-rt)



EDIT: DOH JUST FIGURED IT OUT =/

multiple top/bottom by e^-rt.. duhhh

 

[JohnCU]

Multiply top and bottom by e^-rt.

 

[TheLonelyPhoenix]

Do your own homework.

 

[JohnCU]

I've done this sh!t so many times today trying to prove certain signals are purely real.

/thread

 

[Pepsi90919]

math is overrated