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Code by Tae-Hwan Hung(@graykode)
import numpy as np
from matplotlib import pyplot as plt
def exponential(x, lamb):
y = lamb * np.exp(-lamb * x)
return x, y, np.mean(y), np.std(y)
for lamb in [0.5, 1, 1.5]:
x = np.arange(0, 20, 0.01, dtype=np.float)
x, y, u, s = exponential(x, lamb=lamb)
plt.plot(x, y, label=r'$\mu=%.2f,\ \sigma=%.2f,'
r'\ \lambda=%d$' % (u, s, lamb))
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