在平面直角坐標(biāo)系xOy中,對(duì)于點(diǎn)P和線段AB,若線段PA或PB的垂直平分線與線段AB恰好交于點(diǎn)A或點(diǎn)B,則稱點(diǎn)P為線段AB的垂直對(duì)稱點(diǎn).
(1)已知點(diǎn)A(0,3),B(0,0).①在點(diǎn)P
1(3,3),P
2(1,1),點(diǎn)P
3(3,0)中,線段AB的垂直對(duì)稱點(diǎn)是
P1,P3
P1,P3
;②若P是線段AB的垂直對(duì)稱點(diǎn),直接寫出點(diǎn)P的縱坐標(biāo)y
P的取值范圍
-3<yP≤6,且yP≠0,yP≠3
-3<yP≤6,且yP≠0,yP≠3
;
(2)已知A(0,a),B(b,0),P是線段AB的垂直對(duì)稱點(diǎn),AB⊥BP.
①當(dāng)a=3,1≤b≤4時(shí),直接寫出點(diǎn)P的橫坐標(biāo)x
P的取值范圍
4≤xP≤7
4≤xP≤7
;
②若A,B為坐標(biāo)軸上兩個(gè)動(dòng)點(diǎn),a的取值范圍是1≤a≤m,b的取值范圍是1≤b≤n,動(dòng)點(diǎn)P形成的軌跡組成的圖形面積為10,直接寫出m與n的數(shù)量關(guān)系表達(dá)式
(m-1)(n-1)=10
(m-1)(n-1)=10
.