ГЕОМЕТРИЧЕСКИЕ ХАРАКТЕРИСТИКИ
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dA x,y.
SX, SY X, Y
SX ydA; SY xdA.
A A
: [3 3 , ].
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JX, JY X, Y
JX y 2dA; JY x 2dA;
A A
JP
Jp dA;
A
JXY
JXY xydA;
A
: [4 4 , ].
WX, WY
X, Y
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ymax |
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|xmax|; |ymax| - |
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WP
WP JP .
max
max -
: [3 3 , ].
iX, iY X, Y
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[ ].
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Wx OXY CX1Y1
ymax Wx.
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WX WX1 |
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y1max |
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CXY, CX1Y1, CX2Y2, CX3Y3
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CXY, CX1Y1, CX2Y2, CX3Y3
CXY,
Jxy=0.
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Jx, Jy,
Jmax |
X |
Y |
,JY |
,JY |
,JX |
,JX |
,....... |
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Jmin |
Y |
X |
,JY |
,JY |
,JX |
,JX |
,....... |
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2.1 |
SY |
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xC |
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Sx= y A; SY= x A. |
(2) |
2.2 Y,
Jxy=0.
2.3
JX |
Y |
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X |
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2 |
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2 |
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2.4
CXcYc Jy, Jx, Jxyc
OXY.
JX XC 2 A
JY |
Y |
2 A; |
(3) |
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C |
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JXY XCYC bA;
a,b CXcYc.
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