看板 CSMATH 關於我們 聯絡資訊
※ 引述《sweeten (不想要開學><)》之銘言: : d/dx ln cosx= -tanx d/dx ln a = 1/a d/dx 1/cosx = -sinx/cosx = -tanx using the chan rule(pro some spell error, but u know it, right?) is that what u want? it's seens too easy...............I am not sure : d(tan- y/x)=(xdy-ydx)/(x平方+y平方) it's a procial differnciation problem, right? is that tan(-y/x)?? or other else..................well just let me know : 有沒有人會證明勒 幫忙一下吧~~ -- 如是我聞,仰慕比暗戀還苦, 我走你的路,男兒淚,女兒哭, 我是你執迷的信徒,你是我的墳墓, 入死出生由你做主, 你給我保護我還你祝福, 你是英雄好漢需要抱負,可你欠我幸福,拿什麼來彌補, -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 64.175.247.74
sandor:chain rule,不過比我厲害了 現在的我要想 140.113.163.81 09/25
sandor:一下才行,mathematica把我寵壞了 >_< 140.113.163.81 09/25