[Solved] Identify the error in this code snippet:from scipy.linalg import inv A = [[1, 2], [3, 4]] A_inv = inv(A) | SciPy

SciPy - Linear Algebra (scipy.linalg)

Identify the error in this code snippet:

from scipy.linalg import inv
A = [[1, 2], [3, 4]]
A_inv = inv(A)

Ainv() requires a sparse matrix

BA must be a numpy array, not a list

CMissing import for numpy

Dinv() cannot invert 2x2 matrices

Step-by-Step Solution

Solution:

Step 1: Check input type for inv()
The inv() function expects a numpy array or matrix, not a plain Python list.
Step 2: Identify correction
Convert A to a numpy array using np.array(A) before calling inv().
Final Answer:
A must be a numpy array, not a list -> Option B
Quick Check:
Input type for inv() = numpy array [OK]

Quick Trick: Convert lists to numpy arrays before matrix ops [OK]

Common Mistakes:

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