IB MAI HL Functions Topic 2.2 Applications of Functions (id: 34e3f0694)

本题目来源于试卷: IB MAI HL Functions Topic 2.2 Applications of Functions，类别为 IB数学

[填空题]
Oliver throws a coin from the open window onto flafq,w:k( cjgy4zfy73 rt horizonk-*jboq nt axz+..w b;tal ground in front of his o .jk.b*o;qtzbwa -xn+ffice building.
The path of the coin is modelled by the quadratic curve y=8+3x−0.5x2 , where $x$ represents the horizontal distance the coin is thrown and $y$ represents the height of the coin above the ground. All distances are measured in metres. The wall of the building lies along the $y$-axis. The coin starts its flight at point A, reaches its maximum height at point B, and lands on the ground at point C, as shown on the diagram below.

1.Write down the height in metres from which the coin was thrown.    m
2.Calculate the maximum height, above the ground, reached by the coin.    m
3.Find the horizontal distance from the base of the wall to the point at which the coin hits the ground.    m

参考答案:
空格1: 8±2%  空格2: 12.5±2%  空格3: 8±2% 


本题详细解析:

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