麻煩晒 作者: hetifate 時間: 2014-6-10 06:59 PM 標題: hope i can help you
i am also an f.4 student , and this is my steps
1. you have to dy/dx the u^10
2. so, the derivative is (10u^9) * (du/dx) because we can calculate d(u^10)/dx and we have to use chain rule with the base "u"
3. after knowing the derivative is (10u^9) * (du/dx), we can sub u= 3x^2 + 2 inside the answer and calculate the derivatives directely
Hope i can help you 作者: sadnessfung 時間: 2014-6-10 07:04 PM 標題: 回覆 4# hetifate 的帖子