import numpy as np

arr1 = np.array([[1,2],[3,4]])
arr2 = np.array([[5,6],[7,8]])
arr3 = np.array([[1,2],[3,4],[5,6]])
arr4 = np.array([7,8])

# 列出矩陣的維度
# print(arr1.shape)
# print(arr1.shape[0])

# 矩陣乘積
# print(np.dot(arr1,arr2)) 
print(np.dot(arr3,arr4))


# print(arr1*arr2)


import numpy as np

arr1 = np.array([[1,2],[3,4]])
arr2 = np.array([[5,6],[7,8]])
arr3 = np.array([[1,2],[3,4],[5,6]])
arr4 = np.array([7,8])

# 列出矩陣的維度
# print(arr1.shape)
# print(arr1.shape[0])

# 矩陣乘積
# print(np.dot(arr1,arr2)) 
print(np.dot(arr3,arr4)) 

print(1*7+2*7)


# print(arr1*arr2)


Create 3 layer nt sample
Create 3 layer nt sample
