Jiayang's answer to Shanice Lee's Junior College 1 H2 Maths question.
The second line in ur ans i think u missed out -k instead of just k. This makes k=1/400 instead of -1/400. Is that right ?
Yes I did. My bad.
I’ve checked everything below, it’s not affected
Your first line u change k into -k. But i didnt change as what u did but y is it so that i cannot get the final and ?
I've uploaded an explanation, you can go take a look
360 Tutoring Program