是否存在常数K使关于的方程9乘以的平方减去(4K-7)-6乘K的平方=0的两个实数根AB满足|A*B|=3*2
人气:180 ℃ 时间:2020-09-03 03:33:56
解答
题目中,有一些问题:
一些地方可能漏掉了变量x,另外,
AB满足|A*B|=3*2 (怎么不是直接写6呢?难不成还要考考我们3×2=?)
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