式6: "C" left parenthesis, "x" , "y" , right parenthesis equals 36 left parenthesis, "x" squared plus "y" squared , right parenthesis minus 1Cx,y=36x2+y2−1
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式7: "D" left parenthesis, "x" , "y" , right parenthesis equals StartRoot, "B" left parenthesis, "x" , "y" , right parenthesis squared minus "A" left parenthesis, "x" , "y" , right parenthesis "C" left parenthesis, "x" , "y" , right parenthesis , EndRootDx,y=Bx,y2−Ax,yCx,y
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式8: "Y" left parenthesis, "x" , "y" , right parenthesis equals left bracket, StartFraction, negative "B" left parenthesis, "x" , "y" , right parenthesis plus "D" left parenthesis, "x" , "y" , right parenthesis Over "A" left parenthesis, "x" , "y" , right parenthesis , EndFraction , StartFraction, negative "B" left parenthesis, "x" , "y" , right parenthesis minus "D" left parenthesis, "x" , "y" , right parenthesis Over "A" left parenthesis, "x" , "y" , right parenthesis , EndFraction , right bracketYx,y=−Bx,y+Dx,yAx,y,−Bx,y−Dx,yAx,y
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solve a = k.n mod2PI
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式10: arc tangent left parenthesis, "Y" left parenthesis, "x" , "y" , right parenthesis , "x" times left parenthesis, 6 plus "Y" left parenthesis, "x" , "y" , right parenthesis , right parenthesis , right parenthesis equals "M" left parenthesis, "k" arctan left parenthesis, "y" times left parenthesis, 6 plus "Y" left parenthesis, "x" , "y" , right parenthesis , right parenthesis , StartRoot, left parenthesis, "x" times left parenthesis, 6 plus "Y" left parenthesis, "x" , "y" , right parenthesis , right parenthesis , right parenthesis squared plus "Y" left parenthesis, "x" , "y" , right parenthesis squared , EndRoot , right parenthesis , right parenthesisarctanYx,y,x·6+Yx,y=Mkarctany·6+Yx,y,x·6+Yx,y2+Yx,y2
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式11: "M" left parenthesis, "v" , right parenthesis equals mod left parenthesis, "v" plus pi , 2 pi , right parenthesis minus piMv=modv+π,2π−π
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式12: arc tangent left parenthesis, "y" , "x" , right parenthesis equals "M" left parenthesis, 100 StartRoot, "x" squared plus "y" squared , EndRoot , right parenthesisarctany,x=M100x2+y2
