In the study of transistor as amplifier,if α =ICand

In the study of transistor as amplifier,
if α = I_C and β I_C , where, I_C,I_B
I_E I_B

and I_E are the collector, base and emitter currents, then

As we know that I_e = I_c + I_b
Divide both side by I_e

	I_e	= 1 +	I_b
	I_c		I_c

⇒	1	= 1 +	1
	α		β

β =	α
	1 - α

if α =	I_C	and β	I_C	, where, I_C,I_B
	I_E		I_B

β =	(1 + α)
	α

β =	(1 - α)
	α

β =	α
	(1 - α)