{%hackmd 5xqeIJ7VRCGBfLtfMi0_IQ %}

# Find the determinant

## Problem

Run the SageMath code below or simply click [here](https://sagecell.sagemath.org/?q=equyjk).

load("https://raw.githubusercontent.com/jephianlin/LA-notebook/main/lingeo.py")

### code
set_random_seed(None)

n = 4
while True:
    A = matrix(n, random_int_list(n^2, 3))
    if A.det() != 0:
        break

print("A =")
pretty_print(A)

print("determinant of A =", A.det())

Replace `None` with your favorite number and run the code again. The outcome is a matrix $A$. What is $\det(A)$? Calculate the determinant of $A$ and check your answer with the output.

*This note can be found at Course website > Learning resources.*