Longueur en cm

Taux de goudron en mg/cm

r(x) = 300 * ℯ^(0.025 * x) - 240 * ℯ^(0.02 * x)
a = Integral(r, 0, 8)
c_1 = 0
f = Function(r, 0, 20)
B = Intersect(f, yAxis, (0, 60))
C = Point(xAxis)
D = Point(yAxis)
A = Point(yAxis)
E: (x(C) + 2, y(D))