The cosh Function

	The y = cosh x function is defined as
		cosh x  =  e x  +  e – x 2
		The other hyperbolic functions are
		sinh x  =  e x  –  e – x 2       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)     1/(exp(x-20)+1)

With frame

2.3.3 Shockley-Read-Hall Recombination

Peierls Instability

© H. Föll (Semiconductors - Script)