多項式(24)
Author: 藍邦偉　老師

h(t)=-4.9t²+49t+24.5=-4.9(t²-10t+25)+147=-4.9(t-5)²=147

$ h(t)=-4.9t²+49t+24.5=0⇒t²-10t-5=0⇒t=\frac{10±\sqrt{100+20}}{2}=5±\sqrt{30}>0 $

n = 0 (slider from 0 to 3, step 1)
A = (-1.7, -0.58)
B: A + (7.3, 0)
D: A + (0, 0.7)
C: B + D - A
poly1, a, b, c, d = Polygon(A, B, C, D)