【OA-3】+(OB-4)²=0
OA-3≥0 (OB-4)²≥0
OA=3 OB=4
A﹙0,3﹚ B﹙-4,0﹚
AB:Y=3/4X+3
∠OAC=1/2∠ABO
C在BO中时 ,C﹙-9/4,0﹚
C在正半轴 ,C﹙9/4,0﹚
P﹙X,3/4X+3﹚
P在AB间 P﹙-4/5,12/5﹚ P﹙-2,3/2﹚
P在A之上 P(4,6﹚
P在B之下 P﹙-36/5,-12/5﹚
【OA-3】+(OB-4)²=0
OA-3≥0 (OB-4)²≥0
OA=3 OB=4
A﹙0,3﹚ B﹙-4,0﹚
AB:Y=3/4X+3
∠OAC=1/2∠ABO
C在BO中时 ,C﹙-9/4,0﹚
C在正半轴 ,C﹙9/4,0﹚
P﹙X,3/4X+3﹚
P在AB间 P﹙-4/5,12/5﹚ P﹙-2,3/2﹚
P在A之上 P(4,6﹚
P在B之下 P﹙-36/5,-12/5﹚