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5Â¥2013-09-10 06:57:18
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chyanog

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2Â¥2013-09-09 18:59:17
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walk1997

½ð³æ (ÖøÃûдÊÖ)

ak = {a[1]*b1, a[1]*b2, a[2]*b3, a[3]*b4, a[4]*b5, a[5]}
bk = {c1, c2, c3, c4};
ak /. {a[i_ /; 1 <= i <= 4] -> bk[]}

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3Â¥2013-09-09 21:01:46
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walk1997

½ð³æ (ÖøÃûдÊÖ)

ak = {a[1]*b1, a[1]*b2, a[2]*b3, a[3]*b4, a[4]*b5, a[5]};
bk = {c1, c2, c3, c4};
ak /. {a[j_ /; 1 <= j <= 4] -> bk[[j]]}
4Â¥2013-09-09 21:03:15
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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