急求一道关于均值定理的题!X,Y属于R且X平方+Y平方=4,Z=XY-4(X+Y)+10那Z的最值情况是什么呃``不好意思``这题的确是可以用均值算的我老师就是这样教的```不断变``就行了``怎么搞我就不打了```你们
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/14 17:04:32
![急求一道关于均值定理的题!X,Y属于R且X平方+Y平方=4,Z=XY-4(X+Y)+10那Z的最值情况是什么呃``不好意思``这题的确是可以用均值算的我老师就是这样教的```不断变``就行了``怎么搞我就不打了```你们](/uploads/image/z/2572047-63-7.jpg?t=%E6%80%A5%E6%B1%82%E4%B8%80%E9%81%93%E5%85%B3%E4%BA%8E%E5%9D%87%E5%80%BC%E5%AE%9A%E7%90%86%E7%9A%84%E9%A2%98%21X%2CY%E5%B1%9E%E4%BA%8ER%E4%B8%94X%E5%B9%B3%E6%96%B9%2BY%E5%B9%B3%E6%96%B9%3D4%2CZ%3DXY-4%28X%2BY%29%2B10%E9%82%A3Z%E7%9A%84%E6%9C%80%E5%80%BC%E6%83%85%E5%86%B5%E6%98%AF%E4%BB%80%E4%B9%88%E5%91%83%60%60%E4%B8%8D%E5%A5%BD%E6%84%8F%E6%80%9D%60%60%E8%BF%99%E9%A2%98%E7%9A%84%E7%A1%AE%E6%98%AF%E5%8F%AF%E4%BB%A5%E7%94%A8%E5%9D%87%E5%80%BC%E7%AE%97%E7%9A%84%E6%88%91%E8%80%81%E5%B8%88%E5%B0%B1%E6%98%AF%E8%BF%99%E6%A0%B7%E6%95%99%E7%9A%84%60%60%60%E4%B8%8D%E6%96%AD%E5%8F%98%60%60%E5%B0%B1%E8%A1%8C%E4%BA%86%60%60%E6%80%8E%E4%B9%88%E6%90%9E%E6%88%91%E5%B0%B1%E4%B8%8D%E6%89%93%E4%BA%86%60%60%60%E4%BD%A0%E4%BB%AC)
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