Calculate CD as? y=x+3

∴? ∠CDH？ =? ∠DCO？ =? 45

Again? PQ⊥CD？ (Tangent)

∴? QK？ =? Perceptual quantization

∴? PQ？ =? (√2/2) afternoon

Again? P( 1，M)，M( 1，4)

∴? PH？ =? m

∴? PM？ =? 4 meters

∴? PQ？ =? (√2/2)(4-m)？ =? 2√2? -? (√2/2) meters

∴? PQ^2？ =? 8? -? 4m？ +? ( 1/2)m^2

Again? A(- 1，0)，H( 1，0)

∴? Huh? =2

∴? AP^2？ =? AH^2？ +? PH^2？ =? 2^2? +? m^2？ =? m^2？ +4

Again? AP？ =? QP？

∴? AP^2？ =? QP^2

Namely. m^2？ +4? =? 8? -? 4m？ +? ( 1/2)m^2

Finishing:

m^2？ +? 8m？ -? 8? =? 0

Solution:

m 1？ =? -4? +? 2√6

m2？ =? -4? -? 2√6? (Give up) [I remember that the point P of this question is above the axis of symmetry]

∴? m？ =? -4? +? 2√6

∴? P( 1，-4？ +? 2√6)

Add some points, it's hard.