Liaocheng steel structure recruitment

Solution: (1) According to the topic, OA =13.5+1.15 =14.65m, OD = m. 。

∴A(0, 14.65),C(， 1. 15)。

Let the relationship of arched parabola be y=ax 2 +c,

Then,

The solution is a = ~, c = 14.65.

So the relationship of the function is y =-x 2+14.65.

(2) If Mn = 20m and the coordinate of N point is (10, y 0), substitute it into the relation,

y0 =﹣× 102+ 14.65≈8.229。

∴y 0 ﹣ 1. 15=8.229﹣ 1. 15=7.079≈7.08.

A: The height of the curtain is about 7.08 meters.