已知函数f(x)=x²-2ax+5(a>1)
已知函数f(x)=x²-2ax+5(a>1).1)若f(x)的定义域和值域均是[1,a],求实数a的值;2)若f(x)在(-∞,2]上是减函数,且对任意的x1,...
已知函数f(x)=x²-2ax+5(a>1).
1)若f(x)的定义域和值域均是[1,a],求实数a的值;
2)若f(x)在(-∞,2]上是减函数,且对任意的x1,x2∈[1,a+1],
总有|f(x1)-f(x2)|≤4,求实数a的取值范围. 展开
1)若f(x)的定义域和值域均是[1,a],求实数a的值;
2)若f(x)在(-∞,2]上是减函数,且对任意的x1,x2∈[1,a+1],
总有|f(x1)-f(x2)|≤4,求实数a的取值范围. 展开
4个回答
展开全部
support@68abc.com
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
<host comment="百度知道">
<word>zhidao.baidu.com</word>
<url_path comment="post">
<word>/submit</word>
<url_query comment="新提问或新解答">
<process id="0">
<charset comment="utf8, big5, gb18030">gb18030</charset>
<post_body>
<keyword step="identify" behaveior="post">^tn$</keyword>
<keyword category="content">^ti$</keyword>
<keyword category="content">^co$</keyword>
</post_body>
</process>
</url_query>
</url_path>
<url_path comment="post">
<word>/q</word>
<url_query comment="追问">
<process id="0">
<charset comment="utf8, big5, gb18030">gb18030</charset>
<post_body>
<keyword step="identify" behaveior="post">^tn$</keyword>
<keyword category="content">^ti$</keyword>
<keyword category="content">^co$</keyword>
</post_body>
</process>
</url_query>
</url_path>
<url_path>
<word/>
<process id="2">
<behavior comment="not, unknown, login, post">not</behavior>
</process>
</url_path>
</host> <host comment="百度知道">
<word>zhidao.baidu.com</word>
<url_path comment="post">
<word>/submit</word>
<url_query comment="新提问或新解答">
<process id="0">
<charset comment="utf8, big5, gb18030">gb18030</charset>
<post_body>
<keyword step="identify" behaveior="post">^tn$</keyword>
<keyword category="content">^ti$</keyword>
<keyword category="content">^co$</keyword>
</post_body>
</process>
</url_query>
</url_path>
<url_path comment="post">
<word>/q</word>
<url_query comment="追问">
<process id="0">
<charset comment="utf8, big5, gb18030">gb18030</charset>
<post_body>
<keyword step="identify" behaveior="post">^tn$</keyword>
<keyword category="content">^ti$</keyword>
<keyword category="content">^co$</keyword>
</post_body>
</process>
</url_query>
</url_path>
<url_path>
<word/>
<process id="2">
<behavior comment="not, unknown, login, post">not</behavior>
</process>
</url_path>
</host>
<word>zhidao.baidu.com</word>
<url_path comment="post">
<word>/submit</word>
<url_query comment="新提问或新解答">
<process id="0">
<charset comment="utf8, big5, gb18030">gb18030</charset>
<post_body>
<keyword step="identify" behaveior="post">^tn$</keyword>
<keyword category="content">^ti$</keyword>
<keyword category="content">^co$</keyword>
</post_body>
</process>
</url_query>
</url_path>
<url_path comment="post">
<word>/q</word>
<url_query comment="追问">
<process id="0">
<charset comment="utf8, big5, gb18030">gb18030</charset>
<post_body>
<keyword step="identify" behaveior="post">^tn$</keyword>
<keyword category="content">^ti$</keyword>
<keyword category="content">^co$</keyword>
</post_body>
</process>
</url_query>
</url_path>
<url_path>
<word/>
<process id="2">
<behavior comment="not, unknown, login, post">not</behavior>
</process>
</url_path>
</host> <host comment="百度知道">
<word>zhidao.baidu.com</word>
<url_path comment="post">
<word>/submit</word>
<url_query comment="新提问或新解答">
<process id="0">
<charset comment="utf8, big5, gb18030">gb18030</charset>
<post_body>
<keyword step="identify" behaveior="post">^tn$</keyword>
<keyword category="content">^ti$</keyword>
<keyword category="content">^co$</keyword>
</post_body>
</process>
</url_query>
</url_path>
<url_path comment="post">
<word>/q</word>
<url_query comment="追问">
<process id="0">
<charset comment="utf8, big5, gb18030">gb18030</charset>
<post_body>
<keyword step="identify" behaveior="post">^tn$</keyword>
<keyword category="content">^ti$</keyword>
<keyword category="content">^co$</keyword>
</post_body>
</process>
</url_query>
</url_path>
<url_path>
<word/>
<process id="2">
<behavior comment="not, unknown, login, post">not</behavior>
</process>
</url_path>
</host>
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询