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    • the angle of intersection

      找兩條曲線在 (π/2, 0)這點的交角 先求切線斜率 y = sin 2x ==> y' = 2 cos 2x ==> 在(π/2, 0) y' = - 2 = m1 y = cos x ==> y' = - sin x ==> 在(π/2, 0) y' = - 1 = m2 根據 tan 的和角公式得知,兩條切線的夾角之 tan 值會是 (m2 - m1)/(1 + m1*m2) = 1 / 3 因此兩條曲線的交角為 arctan (1/3) 大約是 18...

    • 翻譯微積分題目(英翻中)3

      ...零" (請你對照一下是否合理?題目因該有附那個函數) 3.Find the points of intersection of each pair of the graphs 找出每一對圖表(因該有附上圖片吧)的交點...

    • 中翻英 - Converging performance

      ... paths" means two paths converge to an intersection (a point). That is why it says "tend or move toward one point or one...