Hi all, having trouble with this one simplification I found inside of a derivative.
(ex + e-x)2 - (ex - e-x)2
--------------------------
(ex + e-x)2
so I seperated and cancelled first too (thats one minus and then the fraction)
(ex - e-x)2
1 - -----------
(ex + e-x)2
when I expand and collect the binomials i got
(ex - e-x)2 = e2x - e0 - e0 + e-2x
and
(ex + e-x)2 = e2x + e0 + e0 + e-2x
I guess im not sure where to go from here or how to keep simplyfing.
a nudge in the right direction would be much appreciated (also how do you post properly formatted math?)
(ex + e-x)2 - (ex - e-x)2
--------------------------
(ex + e-x)2
so I seperated and cancelled first too (thats one minus and then the fraction)
(ex - e-x)2
1 - -----------
(ex + e-x)2
when I expand and collect the binomials i got
(ex - e-x)2 = e2x - e0 - e0 + e-2x
and
(ex + e-x)2 = e2x + e0 + e0 + e-2x
I guess im not sure where to go from here or how to keep simplyfing.
a nudge in the right direction would be much appreciated (also how do you post properly formatted math?)