*2.2 導數函數

函數值的正負與圖形的關係

https://www.geogebra.org/m/krcxyx5e

曲線上有標示出一些點，請判斷出這些點的切線斜率(拉動x軸上與之對應的點，正的往上，負的往下)，最後勾選"Check Your Work"，導函數的圖形會顯示出來，看看你拉動的點是否都有在導函數的圖形上?

https://www.geogebra.org/m/d9ymqxvm

https://www.geogebra.org/m/rtcfqtgg

https://www.geogebra.org/m/BDYnGhbt

https://www.geogebra.org/m/dmcvp85e#material/khaywcfn

https://www.geogebra.org/m/dmcvp85e#material/hywk9wnt

https://www.geogebra.org/m/dmcvp85e#material/fyj78mth