己知：(b^2+c^2-a^2)/2bc+(c^2+a^2-b^2)/2ca+(a^2+b^2-c^2)/2ab=1,
己知：(b^2+c^2-a^2)/2bc+(c^2+a^2-b^2)/2ca+(a^2+b^2-c^2)/2ab=1,
求[(b^2+c^2-a^2)/(2bc)]^2009+[(c^2+a^2-b^2)/(2ca)]^2009+[(a^2+b^2-c^2)/(2ab)]^2009的值
求[(b^2+c^2-a^2)/(2bc)]^2009+[(c^2+a^2-b^2)/(2ca)]^2009+[(a^2+b^2-c^2)/(2ab)]^2009的值
数学人气：499 ℃时间：2020-04-09 17:19:33
优质解答
解；依题意的.(b^2+c^2-a^2)/2bc+(c^2+a^2-b^2)/2ca+(a^2+b^2-c^2)/2ab=1 则[(b^2+c^2-a^2)/(2bc)]^2009+[(c^2+a^2-b^2)/(2ca)]^2009+[(a^2+b^2-c^2)/(2ab)]^2009 =1这是一条推断题,只有分析好题意你就会发现其中的...过程~~谢谢= =
我来回答
类似推荐
猜你喜欢
- 1若a,b,c为非零有理数,且abc的绝对值分之abc等于-1,求a/|a|+b/|b|+c/|c
- 2We do--------sport every day,so we can't keep healthy A too much B.too little C.a little D a lot of
- 3已知xyz≠0,且2x+3y=3x-8y=5z,则x+y/x-y的值是
- 4another 用法
- 5开头是中结尾是道的成语是什么
- 6英语感叹号怎么写
- 7双引号前什么时候用冒号,什么时候用逗号?
- 8Hainan is a very large island.It's the second ＿＿island in Chian.
- 9有一个长方形的周长是60分米,宽是长的3/2,长方形的面积是多少
- 10What will you do with the_____milk in the cup?I will use it to make steam bread.