import numpy as np

x = np.linspace(0,1,5)
print x

y = np.arange(0,1,0.2)
print y

np.arange?

A = np.array([[1,2,3],[4,5,6],[7,8,9]])
print A
print A.shape

B = np.arange(1,10)
print B
print B.reshape((3,3))

print A[0,0]
print A[1:3,0:2]

print A[:,1:]
print A[-1,:]

print M*M

np.dot(M,M)

np.linalg?

np.linalg.norm(x)

M = np.array([[0,2],[8,0]])
b = np.array([1,2])
print M
print b

x = np.linalg.solve(M,b)
print x



lamda,V = np.linalg.eig(M)
print lamda
print V



%pylab inline
import matplotlib.pyplot as plt

x=np.linspace(0,4,1000)
f=np.sin(np.exp(x))
plt.plot(x,f)

x.

plt.


a = np.arange(12)
print a
b=a
b[5]=0
print a