Solutions of Y cOs [G ''(x)] = Arcsin [ f '(x) ]

oh man... i just feel so sick right now... so emo... I just dunno why i'm so stressed...well, i know. but...hope i get better soon, like i always do...
it's not what u may b thinking; anyway, it's not just 1 thing...
Should be fine by next week lah...

Thanks for the B'Day wishes, guys :) really appreciate them:)
i'll acknowledge them asap...
got lab marathon tmr, from 9am to 7pm