/sci/ - Science & Math

>taking a linear algebra test
>getting tripped up on a question asking if my previous Matrix was invertible based on it's determinant
>can't remember if det A = 0 means A it's invertible or not
>have a brain blast and remember determinants are just the fucking area of a parallelogram
>and if det A = 0 obviously there'd be no area, making the the vectors linearly dependent
>and therefore not invertible per the Invertible Matrix Theorem.

>tfw utilized different theorems and the geometric translations of all this shit to intuitively figure out a problem.
Is this where Math becomes fun? I know this is probably basic-bitch shit, but intuitively figuring out this problem was pretty satisfying.