properties of dot product code example
Example 1: dot product
Let a be a vector with coordinates (a1, a2, a3)
Let b be a vector with coordinates (b1, b2, b3)
Dot Product:
<a1, a2, a3> • <b1, b2, b3> = a1*b1 + a2*b2 + a3*b3
a • b = |a||b|cosθ, where θ is the angle between the two vectors
Example 2: dot product array
import numpy.matlib
import numpy as np
a = np.array([[1,2],[3,4]])
b = np.array([[11,12],[13,14]])
np.dot(a,b)