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ZX-DB98EB8B4CNonlinear functions · 第 14 题
Nonlinear functions · 原库模块 1 · Q14 原库参考解析
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- Nonlinear functions · 原库模块 1 · Q14
- PSAT10 P1 · 原库模块 3 · Q22
A quadratic function models a projectile's height, in meters, above the ground in terms of the time, in seconds, after it was launched. The model estimates that the projectile was launched from an initial height of 7 meters above the ground and reached a maximum height of 51.1 meters above the ground 3 seconds after the launch. How many seconds after the launch does the model estimate that the projectile will return to a height of 7 meters?
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