两道简单函数题1已知水渠的横断面为等腰体形,斜角а=40度(如图)当过水断面ABCD的面积为定值S时,求湿周L(L=AB+BC+CD)与水深h之间的函数关系,并指明其定义域?2.收音机的每台售价为90元,成
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![两道简单函数题1已知水渠的横断面为等腰体形,斜角а=40度(如图)当过水断面ABCD的面积为定值S时,求湿周L(L=AB+BC+CD)与水深h之间的函数关系,并指明其定义域?2.收音机的每台售价为90元,成](/uploads/image/z/9935443-19-3.jpg?t=%E4%B8%A4%E9%81%93%E7%AE%80%E5%8D%95%E5%87%BD%E6%95%B0%E9%A2%981%E5%B7%B2%E7%9F%A5%E6%B0%B4%E6%B8%A0%E7%9A%84%E6%A8%AA%E6%96%AD%E9%9D%A2%E4%B8%BA%E7%AD%89%E8%85%B0%E4%BD%93%E5%BD%A2%2C%E6%96%9C%E8%A7%92%D0%B0%3D40%E5%BA%A6%EF%BC%88%E5%A6%82%E5%9B%BE%EF%BC%89%E5%BD%93%E8%BF%87%E6%B0%B4%E6%96%AD%E9%9D%A2ABCD%E7%9A%84%E9%9D%A2%E7%A7%AF%E4%B8%BA%E5%AE%9A%E5%80%BCS%E6%97%B6%2C%E6%B1%82%E6%B9%BF%E5%91%A8L%EF%BC%88L%3DAB%2BBC%2BCD%EF%BC%89%E4%B8%8E%E6%B0%B4%E6%B7%B1h%E4%B9%8B%E9%97%B4%E7%9A%84%E5%87%BD%E6%95%B0%E5%85%B3%E7%B3%BB%2C%E5%B9%B6%E6%8C%87%E6%98%8E%E5%85%B6%E5%AE%9A%E4%B9%89%E5%9F%9F%3F2.%E6%94%B6%E9%9F%B3%E6%9C%BA%E7%9A%84%E6%AF%8F%E5%8F%B0%E5%94%AE%E4%BB%B7%E4%B8%BA90%E5%85%83%2C%E6%88%90)
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