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(i,j) Element from a Matrix | Linear Algebra using Python

Linear Algebra using Python | (i,j) Element from a Matrix: Here, we are going to learn how to find (i,j) Element from a Matrix in Python?
Submitted by Anuj Singh, on May 21, 2020

Prerequisite: Linear Algebra | Defining a Matrix

Linear algebra is the branch of mathematics concerning linear equations by using vector spaces and through matrices. In some of the problems, we need to use a particular element of the matrix. In the python code, we will first define a matrix and then we will call its (i,j) element.

    i = row number
    j = column number
    Objective: A[i][j] ? 

Python code for fidning (i,j) Element from a Matrix

# Linear Algebra Learning Sequence
# Defining a matrix using numpy

import numpy as np

# Use of np.array() to define a matrix
V = np.array([[1,2,3],[2,3,5],[3,6,8]])
print("--The Matrix-- \n",V)

# Finding the ith and jth entry in matrix
i = int(input("Enter i (row number) : "))
j = int(input("Enter j (column number) : "))

# Printing the V[i][j] element of the matrix
print("Component [",i,"] [",j,"] :", V[i-1][j-1])

Output:

--The Matrix-- 
 [[1 2 3]
 [2 3 5]
 [3 6 8]]
Enter i (row number) : 3
Enter j (column number) : 2
Component [ 3 ] [ 2 ] : 6