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What is the error in the following code snippet?

medium📝 Debug Q6 of 15
SciPy - Sparse Linear Algebra
What is the error in the following code snippet?
import numpy as np
from scipy.sparse.linalg import eigs

D = np.array([[1, 2], [3, 4]])
vals, vecs = eigs(D, k=3)
print(vals)
Aeigsh should be used instead of eigs
BMatrix D must be symmetric for eigs
Ck cannot be greater than the matrix size
DMissing parameter 'which' in eigs call
Step-by-Step Solution
Solution:
  1. Step 1: Check matrix size

    D is 2x2, so max k is 2.
  2. Step 2: Check k parameter

    k=3 exceeds matrix dimension, causing error.
  3. Final Answer:

    k cannot be greater than the matrix size -> Option C
  4. Quick Check:

    k must be < matrix size [OK]
Quick Trick: k must be ≤ matrix dimension [OK]
Common Mistakes:
  • Setting k larger than matrix size
  • Assuming eigs requires symmetric matrix

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