I just spent one whole hour trying out two maxima and minima sums, and I still cannot get the freaking answers.
WTF seriously, I nearly died man.
That's an evidence of how hard a math actually is; you can take half an hour just solving one sum!
Or maybe it's just me.
Haha okay whatever.
I shall revise chem now, then proceed to geog.
Go izzah. (: