Quadratic Graph！100% 肯定你有嘢唔識！

0:00 Introduction
0:19 y = ax² + bx + c
3:00 y = a(x-h)² + k
5:04 背後原理解釋！超級非常重要！
7:47 y = a(x-α)(x-β)
9:39 Conclusion + 互相關係
#dse #dsemaths #數學

[@lika1100]

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[@hsy-wx3xs]

正片

[@hiltonyau5345]

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[@Lowki718]

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

[@happyisforever]

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[@WILSON-qe9dq]

讀緊英文？

[@Sarah-dk7nq]

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[@gladysma1307]

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[@qywlkq]

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