第十四讲 位置与坐标
Post on 19-Mar-2016
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1.ABC25AB_________C_________
2.AA_________________________
()1444 (,AO)
ABC
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3_______________
B2
ABC12
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()1. Px-yQ-xy3 ______.2.
M2+x9-x2 xM 3. ABxA-23AB5B (-1,0)(-7,3)33
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4. P12x______P12 _______5. Pa+37+aa=_______.1-2-1-2-5
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1. p2p .
A-111-1 B1-1
C- - D -
2. y6
C060-6
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3.MyP3-2MP5M 4.ABCABA00B20C ;
5.A 2-1BAB________.
6.A4yBx-3AB//xAB5x________ y_____8-19-30-602
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() 1. 30702232728254,
1-1
2.-1.
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1. 30702232728254,1-1.: :y.
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(2),-1.::-1-2-3-4x.
(3,0)(7,0)(2,2)(3,2)(7,2)(8,2)(5,4)(3,0)(7,0)(2,-2)(3,-2)(7,-2)(8,-2)(5,-4)
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43P(xy)xIyIyIxI
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1.1px2y3p 2A02B41PxPA+PB 323-2-32-3-25
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3MNPOP34MN M(50)N(84) 34EF
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4ABCDA04B30C________.ABOBCEE1-3
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2.OOABCA(100)C(04)DOAPBCODP5P 248434P1P3P21DOD5BCP1P22OOD5BCP3
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3.A21O00PAOPP
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1.-4040 2.6120x
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3.,P(2,0),3,A,B,C,D.
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4.ABCD,AB=CD=DA=3,BC=5,A,D.
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1
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