刚刚没有看清题意,顿悟了,请略过。。。。。。
原题:
In the rectangular coordinate system above, if OP<Q, is the area of region OPQ greater than 48?
(1) The coorinates of point P are (6, 8)
(2) The coorinates of point Q are (13, 0)
答案为A。为什么条件2不对呢?我觉得条件2可以确保OPQ<169/4,也就是小于48。
Thanks for ur attn!
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