伤城文章网 > 数学 > 2014-2015学年高中数学(苏教版,必修二) 第二章平面解析几何初步 1第2课时 课时作业(含答案) (2)

2014-2015学年高中数学(苏教版,必修二) 第二章平面解析几何初步 1第2课时 课时作业(含答案) (2)


2 12 1 (1)__________________ x2y2DxEyF0 ________________________ (2) D2E24F0 x2y2DxEyF0 ____________ (3)____________ x2y2DxEyF0 2 M(x0y0) x2y2DxEyF0(D2E24F>0) M M M x20y02Dx0Ey0F____0 x20y02Dx0Ey0F____0 x20y02Dx0Ey0F____0 1 2x22y26x4y30 ________________ 2 x2y24x2y5m0 ________ 3M(3,0) x2y28x2y100 M __________ 4 x2y22x4y30 xy1 ________ 5 x2 y2 2ax 2y (a 1)2 0(0<a<1) O ____________ 6 x2y24x50 AB P(3,1) AB __________ 7 x2y2kx2yk20________ 8 Cx2y22xay30(a ) lxy20 C a________ 9 x2y26x8y0(3,5) AC BD ABCD ________ 10 A(1,5)B(5,5)C(62)D(21) 11 x2y22(t3)x2(14t2)y16t490 (1) t (2) r 12 A(4,2)B(1,3) 2 13 P x2y21 A(3,0) M 1 x2y2DxEyF0(xa)2(yb)2r2 2 3 2 1(1)D2E24F>0 D2 E2 1 2 D2E24F (2)D2 E2 (3)D2E24F<0 2 M M M x20y02Dx0Ey0F>0 x20y02Dx0Ey0F0 x20y02Dx0Ey0F<0 1321 19 2 D2 E2 r12 D2E24F 2m<1 D2E24F>0 3xy30 M M 4 2 (12) 5 O 6xy40 (x2)2y29 C(2,0) 3ABCPkCP13 021 kAB1 AB y11(x3) xy40 7(01) r12 k244k212 43k2 k0 r x2y22y0 x2(y1)21(01) 82 1a2 lxy20 1a220 a2 920 6 (3,5) AC AC10 BDACBD4 6S ABCD12ACBD20 6 10 ABC x2y2DxEyF0 D5EF26 D4 5D5EF50 E2 6D2EF40 F20 ABC x2y24x2y200 D(21) ABCD 11 (1) x2y22(t3)x2(14t2)y16t490 D2E2 4F4(t3)24(14t2)24(16t49)>0 7t26t1<0 17<t<1 (2) r r2D2E424F (t3)2(14t2)2(16t49) 7t26t17t372176 r20176r04 7 7 12 x2y2DxEyF0 y0 x2DxF0 x x1x2D x0 y2EyF0 y y1y2E x1x2y1y2(DE)2 DE2 A(4,2)B(1,3) 1644D2EF0 19D3EF0 D2E0F12 x2y22x120 13 M (xy) P (x0y0) A (3,0) M AP xx02 3yy20 x02x3y02y P x2y21 P x20y201 (2x3)24y21 x322y214 M x322y214

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