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Recognise exponential distribution (#870)
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Recognise exponential distribution (#870)
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f
(
x
)
=
λ
e
−
λ
x
f(x) = \lambda e^{-\lambda x}
f
(
x
)
=
λ
e
−
λ
x
for
x
≥
0
x \ge 0
x
≥
0
.