复数(t2+t-2)-(t2+5t-6)i (t∈R),当t等于几时是纯虚数?y=6^x-2的反函数是什么?平行四边形ABCD的对角线AC,BD,相交于M,且向量AB=a,向量AD=b,则向量BM=?
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![复数(t2+t-2)-(t2+5t-6)i (t∈R),当t等于几时是纯虚数?y=6^x-2的反函数是什么?平行四边形ABCD的对角线AC,BD,相交于M,且向量AB=a,向量AD=b,则向量BM=?](/uploads/image/z/14136261-69-1.jpg?t=%E5%A4%8D%E6%95%B0%28t2%2Bt-2%29-%28t2%2B5t-6%29i+%28t%E2%88%88R%29%2C%E5%BD%93t%E7%AD%89%E4%BA%8E%E5%87%A0%E6%97%B6%E6%98%AF%E7%BA%AF%E8%99%9A%E6%95%B0%3Fy%3D6%5Ex-2%E7%9A%84%E5%8F%8D%E5%87%BD%E6%95%B0%E6%98%AF%E4%BB%80%E4%B9%88%3F%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E7%9A%84%E5%AF%B9%E8%A7%92%E7%BA%BFAC%2CBD%2C%E7%9B%B8%E4%BA%A4%E4%BA%8EM%2C%E4%B8%94%E5%90%91%E9%87%8FAB%3Da%2C%E5%90%91%E9%87%8FAD%3Db%2C%E5%88%99%E5%90%91%E9%87%8FBM%3D%3F)
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