今日考math & stat....
考之前同考之後都好唔開心...
琴日同前日係屋企....自修室....對住本book2...好無助....
睇黎睇去d probability點睇都入唔到腦..../ . \
依家先覺得自己揀stat好似好愚蠢~~
(可是我沒有後悔哦~畢竟做數總比不停地寫寫寫好...我已經受夠中史了!!)
d variance同stardard deviation又唔識計....
諗住記左條式先啦~~點知做o個陣又背錯....真係激死!!!!
我真係覺得自己冇左NFYANG唔得....咩都做唔到!!!
仲有...我發覺自己將所有重點都放左係d同in到....其他都冇咩點溫....
結果...唔識做一條log....就咁冇左15分....15分呀!!!!(抱頭)
明明看似簡單的數....
N ( t ) = [ 2000 e ^ (- x t2 ) ] / t
N(10)=N(30)....搵x~~
因為係long Q既(a).....唔識呢題...結果....15分就咁飛走左~~~
講真....我真係覺得哩學校d卷真係簡單過以前lkt o個d好多.....
但係....自己又真係冇用到連哩d自己都覺得簡單既卷都唔識做....
又係咁俾佢陰到!!!
真係好明顯係自己既問題!!!!
搞到今日做完份卷....係咁記住自己記錯式同唔識計log~~~好灰!!!
係自修室做account都唔想做....冇哂心機!!!
