斜率與垂直
Author: 藍邦偉  老師

兩垂直直線的斜率有什麼關係?

垂直與斜率

u = Vector((x(Corner[1]), 0), (x(Corner[3]), 0))
v = Vector((0, y(Corner[1])), (0, y(Corner[3])))
f(x) = 2 * sin(x) + cos(2 * x) + 2
Q = (4.66, 2.62)
P = (6.640000000000001, 4.5)
a = Line(P, Q)
b: y = y(Q)
R: (x(Corner[2]), y(Q))
α = Angle(P, Q, R)
S = Rotate(P, 270*°, Q)
c = Line(Q, S)
文字6: "= \frac{ -1 }{tan" + α + " }"
T_1 = Corner(1)
T_4 = Corner(4)
T_2: 0.68 * Corner[1] + 0.32 * Corner[2]
T_3: 0.68 * Corner[4] + 0.32 * Corner[3]
多邊形1, t_1, t_2, t_3, t_4 = Polygon(T_1, T_2, T_3, T_4)
d = Segment(T_2, T_3)
文字2: "m_ \overline{ PQ }=tan" + (LaTeX[α]) + "=" + (LaTeX[tan(α)]) + ""
文字3: "m_ \overline{ QS } =tan(" + (LaTeX[α]) + "-90°)"
文字4: "= \frac{sin(" + (LaTeX[α]) + " - 90°) }{cos(" + (LaTeX[α]) + " - 90°) }"
文字5: "= \frac{ -cos" + (LaTeX[α]) + " }{sin" + (LaTeX[α]) + " }"
文字7: "= \frac{ -1 }{" + (LaTeX[tan(α)]) + " }"