定义:如果一个数的平方等于
,记为
,这个数
叫做虚数单位,把形如
(a、b为实数)的数叫做复数,其中a叫做这个复数的实部,b叫做这个复数的虚部,它的加、减、乘法运算与整式的加、减、乘法运算类似.例如:
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a996e1f39f81ae6f442d1c099b73d16e.png)
根据以上信息,完成下列问题:
(1)计算:
,
;
(2)计算:
;
(3)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73be79c02db553929619d957187e2077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc228995efbba2e64d7f1de747024cc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ad9c1cbe74d5c6ff18dce9cff72f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a996e1f39f81ae6f442d1c099b73d16e.png)
根据以上信息,完成下列问题:
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed9cceee603afe981542717871ad3b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80fd9ae5c9fd472f9207ce2c08837c7.png)
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9a020434adf531fff4acfb1f40a3ac.png)
(3)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59cddf39b2febfa81077a48abbc0f0bb.png)
更新时间:2023-02-11 13:59:02
|
相似题推荐
解答题-问答题
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【推荐1】【探索归纳题】
(1)试用“>”“<”或“=”填空:
|(+2)+(+5)|_____|+2|+|+5|;
|(﹣2)+(﹣5)|_____|﹣2|+|﹣5|;
|(+2)+(﹣5)|_____|+2|+|﹣5|;
|(﹣2)+(+5)|_____|﹣2|+|+5|;
|0+(﹣5)|_____|0|+|﹣5|;
(2)做完上述这组填空题,你可以得出什么结论?请你用字母表示你的结论.
(1)试用“>”“<”或“=”填空:
|(+2)+(+5)|_____|+2|+|+5|;
|(﹣2)+(﹣5)|_____|﹣2|+|﹣5|;
|(+2)+(﹣5)|_____|+2|+|﹣5|;
|(﹣2)+(+5)|_____|﹣2|+|+5|;
|0+(﹣5)|_____|0|+|﹣5|;
(2)做完上述这组填空题,你可以得出什么结论?请你用字母表示你的结论.
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解答题-计算题
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【推荐2】已知a是不为1的有理数,我们把
称为a的差倒数,如2的差倒数是
.现已知
,
是
的差倒数,
是
的差倒数,
是
的差倒数.
(1)填空:
,
,
;
(2)根据(1)的计算结果,请求出
的值.
(3)化简:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ebf5e8c5ac0fc22e01967fd0c79bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7c4c708160bfe7e25f6dcbb6f4f3a47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
(1)填空:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9bbe98100c8067ff36ac536d043a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
(2)根据(1)的计算结果,请求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788d6de8f378a7b58362b86bf239230d.png)
(3)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e054fd76deee929170b7e28bc11c82c.png)
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适中
(0.65)
【推荐2】已知x,y满足|x-2|+(y+1)2=0,求-2xy·5xy2+
·2y+6xy的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6266fd1cfd3a129afb50cadfae70f6f.png)
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