(3)當(dāng)時(shí).⊙M經(jīng)過點(diǎn)O.A.P.求過點(diǎn)A且與⊙M相切的直線的解析式. 查看更多

 

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如圖,經(jīng)過原點(diǎn)的拋物線y=-x2+2mx(m>0)與x軸的另一個(gè)交點(diǎn)為A.過點(diǎn)P(1,m)作直線PM⊥x軸于點(diǎn)M,交拋物線于點(diǎn)B.記點(diǎn)B關(guān)于拋物線對(duì)稱軸的對(duì)稱點(diǎn)為C(B、C不重合).連接CB,CP.
(1)當(dāng)m=3時(shí),求點(diǎn)A的坐標(biāo)及BC的長(zhǎng);
(2)當(dāng)m>1時(shí),連接CA,問m為何值時(shí)CA⊥CP?
(3)過點(diǎn)P作PE⊥PC且PE=PC,問是否存在m,使得點(diǎn)E落在坐標(biāo)軸上?若存在,求出所有滿足要求的m的值,并定出相對(duì)應(yīng)的點(diǎn)E坐標(biāo);若不存在,請(qǐng)說明理由.

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如圖,經(jīng)過原點(diǎn)的拋物線y=-x2+2mx(m>0)與x軸的另一個(gè)交點(diǎn)為A.過點(diǎn)P(1,m)作直線PM⊥x軸于點(diǎn)M,交拋物線于點(diǎn)B.記點(diǎn)B關(guān)于拋物線對(duì)稱軸的對(duì)稱點(diǎn)為C(B、C不重合).連接CB,CP.
(1)當(dāng)m=3時(shí),求點(diǎn)A的坐標(biāo)及BC的長(zhǎng);
(2)當(dāng)m>1時(shí),連接CA,問m為何值時(shí)CA⊥CP?
(3)過點(diǎn)P作PE⊥PC且PE=PC,問是否存在m,使得點(diǎn)E落在坐標(biāo)軸上?若存在,求出所有滿足要求的m的值,并定出相對(duì)應(yīng)的點(diǎn)E坐標(biāo);若不存在,請(qǐng)說明理由.

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如圖,經(jīng)過原點(diǎn)的拋物線y=-x2+2mx(m>0)與x軸的另一個(gè)交點(diǎn)為A.過點(diǎn)P(1,m)作直線PM⊥x軸于點(diǎn)M,交拋物線于點(diǎn)B.記點(diǎn)B關(guān)于拋物線對(duì)稱軸的對(duì)稱點(diǎn)為C(B、C不重合).連接CB,CP.
(1)當(dāng)m=3時(shí),求點(diǎn)A的坐標(biāo)及BC的長(zhǎng);
(2)當(dāng)m>1時(shí),連接CA,問m為何值時(shí)CA⊥CP?
(3)過點(diǎn)P作PE⊥PC且PE=PC,問是否存在m,使得點(diǎn)E落在坐標(biāo)軸上?若存在,求出所有滿足要求的m的值,并定出相對(duì)應(yīng)的點(diǎn)E坐標(biāo);若不存在,請(qǐng)說明理由.

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如圖,經(jīng)過原點(diǎn)的拋物線y=-x2+2mx(m>0)與x軸的另一個(gè)交點(diǎn)為A.過點(diǎn)P(1,m)作直線PM⊥x軸于點(diǎn)M,交拋物線于點(diǎn)B.記點(diǎn)B關(guān)于拋物線對(duì)稱軸的對(duì)稱點(diǎn)為C(B、C不重合).連接CB,CP.
(1)當(dāng)m=3時(shí),求點(diǎn)A的坐標(biāo)及BC的長(zhǎng);
(2)當(dāng)m>1時(shí),連接CA,問m為何值時(shí)CA⊥CP?
(3)過點(diǎn)P作PE⊥PC且PE=PC,問是否存在m,使得點(diǎn)E落在坐標(biāo)軸上?若存在,求出所有滿足要求的m的值,并定出相對(duì)應(yīng)的點(diǎn)E坐標(biāo);若不存在,請(qǐng)說明理由.

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如圖,經(jīng)過原點(diǎn)的拋物線y=-x2+2mx(m>0)與x軸的另一個(gè)交點(diǎn)為A.過點(diǎn)P(1,m)作直線PM⊥x軸于點(diǎn)M,交拋物線于點(diǎn)B.記點(diǎn)B關(guān)于拋物線對(duì)稱軸的對(duì)稱點(diǎn)為C(B、C不重合).連接CB,CP.
(1)當(dāng)m=3時(shí),求點(diǎn)A的坐標(biāo)及BC的長(zhǎng);
(2)當(dāng)m>1時(shí),連接CA,問m為何值時(shí)CA⊥CP?
(3)過點(diǎn)P作PE⊥PC且PE=PC,問是否存在m,使得點(diǎn)E落在坐標(biāo)軸上?若存在,求出所有滿足要求的m的值,并定出相對(duì)應(yīng)的點(diǎn)E坐標(biāo);若不存在,請(qǐng)說明理由.

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