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講嘢又幽默又有用 好掂🤙🏽
👍🏻👍🏻👍🏻👍🏻👍🏻
1:35 咁分b 嘅原因 我諗係y=ax^2+bx+cdy/dx = 2ax+c 佢靠睇係y軸嗰刻睇dy/dx |x=0 =2a(0) + b= b 所以係y軸斜率+ b=+veM=- b=-veFor calculus students
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真係每一個英文字都讀唔準,典型香港老師。
讀緊英文?
You are not as happy as your name said😂how deplorable, just chill the damn out
唔緊要啦 佢又唔係教英文 聽得明咪得🤣
唔好咁要求咁高啦數學老師又唔係教英文數學
冇问题哈嘛?😅
講嘢又幽默又有用 好掂🤙🏽
👍🏻👍🏻👍🏻👍🏻👍🏻
1:35 咁分b 嘅原因 我諗係
y=ax^2+bx+c
dy/dx = 2ax+c
佢靠睇係y軸嗰刻睇
dy/dx |x=0
=2a(0) + b
= b
所以係y軸斜率+ b=+ve
M=- b=-ve
For calculus students
正片
真係每一個英文字都讀唔準,典型香港老師。
讀緊英文?
You are not as happy as your name said😂how deplorable, just chill the damn out
唔緊要啦 佢又唔係教英文 聽得明咪得🤣
唔好咁要求咁高啦數學老師又唔係教英文數學
冇问题哈嘛?😅