Compute the inner product of vectors for 1-D arrays using NumPy in Python Last Updated : 29 Aug, 2020 Comments Improve Suggest changes Like Article Like Report Python has a popular package called NumPy which used to perform complex calculations on 1-D and multi-dimensional arrays. To find the inner product of two arrays, we can use the inner() function of the NumPy package. Syntax: numpy.inner(array1, array2) Parameters: array1, array2: arrays to be evaluated Returns: Inner Product of two arrays Example 1: Python3 # Importing library import numpy as np # Creating two 1-D arrays array1 = np.array([6,2]) array2 = np.array([2,5]) print("Original 1-D arrays:") print(array1) print(array2) # Output print("Inner Product of the two array is:") result = np.inner(array1, array2) print(result) Output: Original 1-D arrays: [6 2] [2 5] Inner Product of the two array is: 22 Example 2: Python3 # Importing library import numpy as np # Creating two 1-D arrays array1 = np.array([1,3,5]) array2 = np.array([0,1,5]) print("Original 1-D arrays:") print(array1) print(array2) # Output print("Inner Product of the two array is:") result = np.inner(array1, array2) print(result) Output: Original 1-D arrays: [1 3 5] [0 1 5] Inner Product of the two array is: 28 Example 3: Python3 # Importing library import numpy as np # Creating two 1-D arrays array1 = np.array([1,2,2,8]) array2 = np.array([2,1,0,6]) print("Original 1-D arrays:") print(array1) print(array2) # Output print("Inner Product of the two array is:") result = np.inner(array1, array2) print(result) Output: Original 1-D arrays: [1 2 2 8] [2 1 0 6] Inner Product of the two array is: 52 Comment More infoAdvertise with us Next Article Compute the inner product of vectors for 1-D arrays using NumPy in Python G geekmonkey Follow Improve Article Tags : Python Numpy Python-numpy Python numpy-Mathematical Function Practice Tags : python Similar Reads Get the Outer Product of an array with vector of letters using NumPy in Python In this article let's see how to get the outer product of an array with a vector of letters in Python. numpy.outer() method The numpy.outer() method is used to get the outer product of an array with a vector of elements in Python. 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