The cosh Function

The y = cosh x function is defined as
cosh x  =  e x  +  e x
The other hyperbolic functions are
sinh x  =  e x  –  e x
tanh  =  e x  –  e x
e x  +  e x
What they look like you can find out for yourself by activating the JAVA module below
Here a few examples as how to write equations
cos(x) exp(x)
cos(x*2)   exp(1/x)
cos(x/40)   x^2
cosh(x)   1/x^2
cosh(40*x)   1/(x^3+10)

With frame With frame as PDF

go to 2.3.3 Shockley-Read-Hall Recombination

go to Peierls Instability

© H. Föll (Semiconductors - Script)