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二次函数培优题：拱桥最大高度16米，跨度40米，求解析式？
找到顶点坐标，求相应解析式。
二次函数培优题134/147
App04:16
App03:07
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App03:50
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App02:58
App06:20
App03:38
App02:42
App08:36
App10:38
App07:35
App02:41打开App观看
找到顶点坐标，求相应解析式。
App04:16App03:07App04:08App05:06App07:16App03:50App07:05App02:58App06:20App03:38App02:42App08:36App10:38App07:35App02:41
