Mathematics
Senior High
ๅฅ่งฃใงใpoint๐ใฎใใใช่งฃใๆนใใใใฎใงใใใ
ใชใkใป2+2ใป(-k)=0ใใ2็ด็ทใฏ็ด่กใใฆใใจใใใใฎใงใใ๏ผ
ไพ้ก114 2็ด็ทใฎไบค็นใฎ่ป่ทก
โไพ้ก111
* 2็ด็ทkx+2y+2k=0, 2x-ky=0 ใใใใ kใฎๅคใๅคๅใใใจใ,
ใใฎ2็ด็ทใฎไบค็นใฎ่ป่ทกใๆฑใใใ
WII
Point ็ดไบคใใ2็ด็ทใฎไบค็นใฎ่ป่ทก
ไพ้ก114 ใซใใใฆ, 2็ด็ท kx+2y+2k=0 ใจ2x-ky=0 ใฎๅพใใซๆณจ็ฎใใใจ,
kโข2+2.(k)=0 ใใ 2็ด็ทใฏ็ดไบคใใฆใใใใจใใใใใใใฎใใจใๅฉ็จใใฆไบค็น
ใฎ่ป่ทกใๆฑใใ่งฃๆณใใใใ (Play Back 10 )
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