I feel so paiseh taking what my paternal grandma gave to me just now.

Promos are closer than ever, which also means my lunar birthday is coming soon. I've yet to get myself down to start studying. I'll damn scared I'll do real badly.

When you help others, you'll receive something good in return, in a different form that you'll not recognise. Helped my elder recall some of those matrices techniques learnt in Secondary school. Apparently, to find the inverse of a matrix, it only applies to a 2x2 matrix. My bro's university question is for a 3x3 matrix, so no help. Went online to search for a way, and we did! Yay! So happy, my bro's question is not stuck again. And along the process, I learnt how to find the inverse of a 3x3 matrix. Hopefully, I can remember it for long, not that I can use it for promos.