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Mathematics problems in Chengdu senior high school entrance examination
The first thing to know is that this P point is the intersection of two functions.

According to the meaning of the question, k < 0

Then find the intersection. Under the combination of two functions.

2k/x=-x+√3k

-x? +√3kx-2k=0

The sum of two roots is -b/a=√3, and the product of two roots is c/a=2k.

Then the OP distance is useless, draw the picture yourself,

You'll find it, op =x 1? +y 1?

The intersection of inverse proportional function and linear function is characterized by x2 = y 1, x 1 = y2.

So op? =x 1? +y 1? =x 1? +x2? =(x 1+x2)? -2x 1x2=(√3)? -2×2k=7

Calculate k =-7

Digest well.