Question

Transcribed Image Text:5. Hence show that:
OU
(hv exp(-Bhv))
hv exp(-2ẞhv)
=-3Nhv
+
οβ
(1-exp(-ẞhv)) (1-exp(-ßhv))²
Hint 1: you will need to use the quotient rule:
yf'(x) xf'(y)
f'(x)
f'(y) (f'(y))² (f'(y))²
Hint 2: the following identity will avoid you having to use the chain rule:
d
(1-e√(x)) = -f'(x)e√(x)
dx
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