中学生网络课堂
初三数学 (北师版)
二次函数综合
本课配套习题挑战模式1/5
单选题
难度系数：
1.如图，已知抛物线y= 
x2 - 
x-3与x轴的交点为A、D（A在D的右侧），与y轴的交点为C. 若点M在抛物线对称轴上，使得MD+MC的值最小时，点M的坐标为（ ）
x2 - x-3与x轴的交点为A、D（A在D的右侧），与y轴的交点为C. 若点M在抛物线对称轴上，使得MD+MC的值最小时，点M的坐标为（ ） A: （1，  ） |
| B: （1，- ） |
| C: （，1） |
| D: （1，- ） |
一次做对，真牛！
+5奖励规则>
- 提示1：IOaJvuWIsOeCuUTlhbPkuo7mipvniannur/lr7nnp7DovbTnmoTlr7nnp7DngrlB77yM6L+e57uTQUPvvIzmoLnmja7lvoXlrprns7vmlbDms5Xlj6/lvpfnm7Tnur9BQ+eahOino+aekOW8j++8jOS7pHg9Me+8jOaxguW+l+aKm+eJqee6v+WvueensOi9tOS4juebtOe6v0FD55qE6Kej5p6Q5byP55qE5Lqk54K55Z2Q5qCH77yM5Y2z5Li65omA5rGC54K5TeeahOWdkOaghw==
- 答案：Qg==
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.如图，已知抛物线 y=ax2+bx+c（a≠0）的顶点坐标为（4，
），且与y轴交于点C，与x轴交于A，B两点（点A在点B的左边），且A点坐标为（2，0）。在抛物线的对称轴 
上是否存在一点P，使AP+CP的值最小？若存在，则AP+CP的最小值为（ ）。
），且与y轴交于点C，与x轴交于A，B两点（点A在点B的左边），且A点坐标为（2，0）。在抛物线的对称轴 上是否存在一点P，使AP+CP的值最小？若存在，则AP+CP的最小值为（ ）。 A:  |
B: 2 |
| C: 2 |
D: 2 |
一次做对，真牛！
+5奖励规则>
- 提示1：IOeUseS6jueCuUHjgIHngrlC5YWz5LqO5a+556ew6L20IDxpbWcgd2lkdGg9NiBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC85Ri9CMi9yQkFDRTFQZko3aVRYWmhiQUFBQkVTUXppTEE2ODMucG5nIj7lr7nnp7DvvIznur/mrrVCQ+eahOmVv+WNs+S4ukFQK0NQ55qE5pyA5bCP5YC8
- 答案：Qw==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.如图，抛物线y=x2-2x+c过点A（3，0），交y轴于点D. 直线y=- 
x-1交y轴于点M，与该抛物线的对称轴交于点B. 在该抛物线的对称轴上有一点P，使得△POM的周长最小时，写出点P的坐标以及△POM周长的最小值正确的是（ ）
x-1交y轴于点M，与该抛物线的对称轴交于点B. 在该抛物线的对称轴上有一点P，使得△POM的周长最小时，写出点P的坐标以及△POM周长的最小值正确的是（ ） A: （1，-1），1+ |
B: （1，-  ），1+ |
| C: （1，- ），1- |
| D: （1，-1），1- |
一次做对，真牛！
+5奖励规则>
- 提示1：IOagueaNruaKm+eJqee6v+ino+aekOW8j+axguW+l+WvueensOi9tHg9Me+8jOagueaNruWvueensOaAp+axguWHuueCuU7nmoTlnZDmoIfvvIzov57mjqVNTu+8jOS6pOWvueensOi9tOS6jueCuVDvvIznlLHlh6DkvZXnn6Xor4blj6/nn6XvvIxQTytQTT1QTitQTT1NTuS4uuacgOWwj++8jOeEtuWQjuagueaNruWLvuiCoeWumueQhuaxguW+ly4=
- 答案：Qg==
PGltZyB3aWR0aD0xODEgaGVpZ2h0PTE3NSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzYyLzJGL3JCQUNGRlBmS0g3QnAyeEhBQUFnVEhRR01xRTUyNS5wbmciIGFsaWduPWxlZnQgaHNwYWNlPTEyID7op6PvvJrlpoLlm77vvIzlnKhY6L205LiK5oiq5Y+WQ049T0PvvIzov57mjqVNTu+8jOS6pOWvueensOi9tOS6jlDngrnvvJs8YnI+4oi15oqb54mp57q/eT14PHN1cD4yPC9zdXA+LTJ4K2Pov4fngrlB77yIM++8jDDvvInvvIw8YnI+4oi0MD0zPHN1cD4yPC9zdXA+LTLDlzMrY++8jDxicj7op6PlvpfvvJpjPS0z77ybPGJyPuKItOino+aekOW8j+S4unk9eDxzdXA+Mjwvc3VwPi0yeC0z77yMRO+8iDDvvIwtM++8ie+8mzxicj7iiLXnm7Tnur95PS0gPGltZyB3aWR0aD0xNCBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC85Ri9CNy9yQkFDRTFQZktIN0QtdTcyQUFBQmZYdUR2RW82NjcucG5nIj54LTHkuqR56L205LqO54K5Te+8jDxicj7iiLRN77yIMO+8jC0x77yJ77yM5oqb54mp57q/55qE5a+556ew6L205Li677yaeD0x77yMPGJyPuKItE7vvIgy77yMMO+8ie+8jDxicj7iiLTnm7Tnur9NTuino+aekOW8j++8mnk9PGltZyB3aWR0aD03IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzlGL0I3L3JCQUNFMVBmS0g2UnNDdDlBQUFCSkg3S3RUVTA0OS5wbmciPngtMe+8jDxicj7lvZN4PTHml7bvvIx5PS0gPGltZyB3aWR0aD03IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzlGL0I3L3JCQUNFMVBmS0g2UnNDdDlBQUFCSkg3S3RUVTA0OS5wbmciPu+8mzxicj7iiLRQ77yIMe+8jC0gPGltZyB3aWR0aD03IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzlGL0I3L3JCQUNFMVBmS0g2UnNDdDlBQUFCSkg3S3RUVTA0OS5wbmciPu+8ie+8jDxicj7iiLTnlLHlh6DkvZXnn6Xor4blj6/nn6XvvIxQTStQTj1QTStQT+S4uuacgOWwj++8jDxicj7lnKhSVOKWs1BPQ+S4rTxicj5QTz08aW1nIHdpZHRoPTgzIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzlGL0I3L3JCQUNFMVBmS0g3Q0Rza09BQUFDTG1pSmNaZzE4MC5wbmciPj08aW1nIHdpZHRoPTE0IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzYyLzJGL3JCQUNGRlBmS0g3eFlfM3RBQUFCZTBycVh1ZzIwOC5wbmciPu+8mzxicj7iiLRQTT08aW1nIHdpZHRoPTE0IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzYyLzJGL3JCQUNGRlBmS0g3eFlfM3RBQUFCZTBycVh1ZzIwOC5wbmciPu+8mzxicj7iiLTilrNQT03lkajplb/nmoTmnIDlsI/lgLzkuLoxKzxpbWcgd2lkdGg9MTkgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvOUYvQjcvckJBQ0UxUGZLSDdRSWVsQkFBQUJiUk9nRzI0ODAwLnBuZyI+77ybPGJyPuaVhemAiULjgII=
本课配套习题挑战模式4/5
单选题
难度系数：
4.如图，△ABC的三个顶点坐标分别为A（-2，0）、B（6，0）、C（0，−2），抛物线y＝
x2−
x−2（a≠0）经过A、B、C三点. 若抛物线的顶点为D，在直线AC上有一点P，使得△BDP的周长最小，则P点的坐标为（ ）。 
），抛物线y＝x2−x−2（a≠0）经过A、B、C三点. 若抛物线的顶点为D，在直线AC上有一点P，使得△BDP的周长最小，则P点的坐标为（ ）。 A: （ ） |
B: （ ） |
C: （ ） |
D: （ ） |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWIqeeUqOi9tOWvueensOWbvuW9oueahOaAp+i0qO+8jOaJvuWHuueCuULlhbPkuo7nm7Tnur9BQ+eahOWvueensOeCue+8jOi/m+S4gOatpeWIqeeUqOebtOinkuS4ieinkuW9oueahOaAp+i0qOS7peWPiuW+heWumuezu+aVsOazleS4juS4pOebtOe6v+eahOebuOS6pOeahOWFs+ezu+axguW+l+etlOahiC4=
- 答案：Qg==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.如图，已知一次函数y1=
x+b的图象 与二次函数y2=-x2+mx+b的图象C′都经过点B（0，1）和点C，且图象C′过点A（2-
，0）. 若点F、G在图象C′上，长度为的线段DE在线段BC上移动，EF与DG始终平行于y轴，当四边形DEFG的面积最大时，在x轴上求点P，使PD+PE最小，点P的坐标为（ ）. 
x+b的图象 与二次函数y2=-x2+mx+b的图象C′都经过点B（0，1）和点C，且图象C′过点A（2-，0）. 若点F、G在图象C′上，长度为的线段DE在线段BC上移动，EF与DG始终平行于y轴，当四边形DEFG的面积最大时，在x轴上求点P，使PD+PE最小，点P的坐标为（ ）. A: （ ，0） |
B: （ ，0） |
C: （ ，0） |
D: （ ，0） |
一次做对，真牛！
+5奖励规则>
- 提示1：DQrnrKwx5q2l77ya6aaW5YWI56Gu5a6a5L2V5pe25Zub6L655b2iREVGR+eahOmdouenr+acgOWkpy4=
- 提示2：5b2T5Zub6L655b2iREVGR+aYr+S4gOS4quair+W9ou+8jOWwhuWFtumdouenr+eUqOWQq+acieacquefpeaVsOeahOS7o+aVsOW8j+ihqOekuuWHuuadpe+8jOi/meS4quS7o+aVsOW8j+aYr+S4gOS4quS6jOasoeWHveaVsO+8jOagueaNruWFtuacgOWAvOaxguWHuuacquefpeaVsOeahOWAvO+8jOi/m+iAjOW+l+WIsOmdouenr+acgOWkp+aXtueCuUTjgIFF55qE5Z2Q5qCH77yb
- 提示3：56ysMuatpe+8muWIqeeUqOWHoOS9leaAp+i0qOehruWumlBEK1BF5pyA5bCP55qE5p2h5Lu277yM5bm25rGC5Ye654K5UOeahOWdkOaghy4=
- 提示4：5L2c54K5ROWFs+S6jnjovbTnmoTlr7nnp7DngrlE4oCy77yM6L+e5o6lROKAskXvvIzkuI546L205Lqk5LqO54K5UC4g5qC55o2u6L205a+556ew5Y+K5Lik54K55LmL6Ze057q/5q615pyA55+t5Y+v55+l77yM5q2k5pe2UEQrUEXmnIDlsI8uIOWIqeeUqOW+heWumuezu+aVsOazleaxguWHuuebtOe6v0TigLJF55qE6Kej5p6Q5byP77yM6L+b6ICM5rGC5Ye654K5UOeahOWdkOaghy4=
- 答案：RA==
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
