[Solved] What is the issue with this code snippet? import numpy as np from scipy.linalg import cholesky A = np.array([[2, -1], [-1, 2]]) L = cholesky(A) print(L) | SciPy

SciPy - Linear Algebra (scipy.linalg)

What is the issue with this code snippet?

import numpy as np
from scipy.linalg import cholesky
A = np.array([[2, -1], [-1, 2]])
L = cholesky(A)
print(L)

AThe matrix <code>A</code> is not square

BThe import statement for cholesky is incorrect

CMatrix <code>A</code> is not positive definite, causing cholesky to fail

DThe function cholesky requires <code>lower=True</code> parameter

Step-by-Step Solution

Solution:

Step 1: Check matrix properties
Matrix A must be positive definite for Cholesky decomposition.
Step 2: Verify if A is positive definite
Matrix A = [[2, -1], [-1, 2]] is positive definite, so no error expected here.
Step 3: Re-examine options
Actually, A is positive definite, so no error should occur. The code is correct.
Final Answer:
No issue; code runs correctly -> Option A
Quick Check:
Check eigenvalues of A are positive [OK]

Quick Trick: Check matrix positive definiteness before cholesky [OK]

Common Mistakes:

MISTAKES

Master "Linear Algebra (scipy.linalg)" in SciPy

9 interactive learning modes - each teaches the same concept differently

More SciPy Quizzes

What is the issue with this code snippet?