行列式1 2 3 4 -2 1 -4 3 3 -4 -1 2 4 3 -2 -1
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時(shí)間:2021-07-03 18:01
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編輯:niming
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| 1 2 3 4 | ①
| -2 1 -4 3 | ②
| 3 -4 -1 2 | ③
| 4 3 -2 -1 | ④
=
| 1 2 3 4 |
| 0 5 2 11 |(②②+①×2)
| 0 -10 -10 -10 |(③③-①×3)
| 0 -5 -14 -17 |(④④-①×4)
=
| 5 2 11 | ②
| -10 -10 -10 | ③ × 1
| -5 -14 -17 | ④
=
| 5 2 11 |
| 0 -6 12 |(③③+②×2)
| 0 -12 -6 |(④④+②)
=
| -6 12 |
| -12 -6 | × 5
= 180 × 5
= 900
求首爾EMS郵寄回國(guó)價(jià)格表?。。。?/h2>
http://weibo.com/6004776594/Edq5Jd3MO?from=page_1005056004776594_profile&wvr=6&mod=weibotime&type=comment#_rnd1481266939447 親故參考下 這里有價(jià)格表~~~
http://weibo.com/6004776594/Edq5Jd3MO?from=page_1005056004776594_profile&wvr=6&mod=weibotime&type=comment#_rnd1481266939447 親故參考下 這里有價(jià)格表~~~
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