作者mormasker666 (嘎哥Gentlman Gaga)
看板Math
标题[其他] 工数小考
时间Thu Apr 21 17:24:41 2011
If u is any vector in a vector space S and a is any scalar, using the
definition of vector space, prove that (i) (-1)u = -u (ii) a0 = 0 .
完全不会下手...
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