(1)计算:
;
(2)如图,
,
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11332dda1d4290c00ca84dd9dddf99bf.png)
(2)如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a23f35ebcd9799d82c1e41c09781a4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0866e1551b61074ca8e61261ecd1f9dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e046a35134460ddb9db23a1f3404d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c220eadc312101e2fb89dfe920f7b30d.png)
更新时间:2024-05-01 19:22:58
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【推荐2】已知a,b互为相反数,c,d互为倒数,
,求:
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【推荐2】把代表下列各数的序号填在相应的大括号内
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①
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整数集合:{ };
负分数集合:{ }
无理数集合:{ }.
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【推荐1】图,在等腰直角△ABC中,∠ABC=90°,D是线段AC上一点(CA>2CD),连接BD,过点C作BD的垂线,交BD的延长线于点E,交BA的延长线于点F,过点D作BC的垂线,分别交BC、CF于M、N,连接BN.
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