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发表于 2011-5-14 13:21:50
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来自 黑龙江哈尔滨
mmtc解,无实数解
本帖最后由 TBE_Legend 于 2011-5-14 13:23 编辑
- In[1]:= Clear["Global`*"]
- r1 = 380;
- r2 = 90963/100;
- r3 = 69061/100;
- r4 = 8763/100;
- r5 = 82572/100;
- x11 = 0;
- y11 = 0;
- x12 = 380;
- y12 = 0;
- x13 = 380 + 90963/100;
- y13 = 0;
- x14 = 380 + 90963/100 + 380;
- y14 = 0;
- x21 = 0 + 3500;
- y21 = 0;
- x22 = 380 + 3500;
- y22 = 0;
- x23 = 380 + 90963/100 + 3500;
- y23 = 0;
- x24 = 380 + 90963/100 + 380 + 3500;
- y24 = 0;
- eqs = {(x11 - x15)^2 + (y11 - y15)^2 - r3^2 == 0,
- (x14 - x16)^2 + (y14 - y16)^2 - r3^2 == 0,
- (x15 - x16)^2 + (y15 - y16)^2 - r4^2 == 0,
- (x15 - x25)^2 + (y15 - y25)^2 - r5^2 == 0,
- (x15 - x26)^2 + (y15 - y26)^2 - r5^2 == 0,
- (x21 - x25)^2 + (y21 - y25)^2 - r3^2 == 0,
- (x24 - x26)^2 + (y24 - y26)^2 - r3^2 == 0,
- (x25 - x26)^2 + (y25 - y26)^2 - r4^2 == 0};
- vars = Cases[eqs, _Symbol, Infinity];
- sol = NSolve[eqs, vars]
- sol // Length
- Out[25]= {{x15 -> 2112.37 - 8048.34 I, y15 -> -8076.02 - 2105.12 I,
- x16 -> 2948.15 - 8047.75 I, y16 -> -8076.61 - 1273.95 I,
- x25 -> 1684.27 - 6.95731 I, y25 -> 7.52268 - 1679.26 I,
- x26 -> 2543.35 - 7.10992 I,
- y26 -> 7.36927 - 2533.86 I}, {x15 -> 2112.37 + 8048.34 I,
- y15 -> -8076.02 + 2105.12 I, x16 -> 2948.15 + 8047.75 I,
- y16 -> -8076.61 + 1273.95 I, x25 -> 1684.27 + 6.95731 I,
- y25 -> 7.52268 + 1679.26 I, x26 -> 2543.35 + 7.10992 I,
- y26 -> 7.36927 + 2533.86 I}, {x15 -> 2112.37 - 8048.34 I,
- y15 -> 8076.02 + 2105.12 I, x16 -> 2948.15 - 8047.75 I,
- y16 -> 8076.61 + 1273.95 I, x25 -> 1684.27 - 6.95731 I,
- y25 -> -7.52268 + 1679.26 I, x26 -> 2543.35 - 7.10992 I,
- y26 -> -7.36927 + 2533.86 I}, {x15 -> 2112.37 + 8048.34 I,
- y15 -> 8076.02 - 2105.12 I, x16 -> 2948.15 + 8047.75 I,
- y16 -> 8076.61 - 1273.95 I, x25 -> 1684.27 + 6.95731 I,
- y25 -> -7.52268 - 1679.26 I, x26 -> 2543.35 + 7.10992 I,
- y26 -> -7.36927 - 2533.86 I}, {x15 -> 2112.37 - 8048.34 I,
- y15 -> 8076.02 + 2105.12 I, x16 -> 694.99 + 11.2632 I,
- y16 -> 15.9597 + 687.83 I, x25 -> 1684.27 - 6.95731 I,
- y25 -> -7.52268 + 1679.26 I, x26 -> 2543.35 - 7.10992 I,
- y26 -> -7.36927 + 2533.86 I}, {x15 -> 2112.37 + 8048.34 I,
- y15 -> 8076.02 - 2105.12 I, x16 -> 694.99 - 11.2632 I,
- y16 -> 15.9597 - 687.83 I, x25 -> 1684.27 + 6.95731 I,
- y25 -> -7.52268 - 1679.26 I, x26 -> 2543.35 + 7.10992 I,
- y26 -> -7.36927 - 2533.86 I}, {x15 -> 2112.37 - 8048.34 I,
- y15 -> -8076.02 - 2105.12 I, x16 -> 694.99 + 11.2632 I,
- y16 -> -15.9597 - 687.83 I, x25 -> 1684.27 - 6.95731 I,
- y25 -> 7.52268 - 1679.26 I, x26 -> 2543.35 - 7.10992 I,
- y26 -> 7.36927 - 2533.86 I}, {x15 -> 2112.37 + 8048.34 I,
- y15 -> -8076.02 + 2105.12 I, x16 -> 694.99 - 11.2632 I,
- y16 -> -15.9597 + 687.83 I, x25 -> 1684.27 + 6.95731 I,
- y25 -> 7.52268 + 1679.26 I, x26 -> 2543.35 + 7.10992 I,
- y26 -> 7.36927 + 2533.86 I}, {x15 -> 2383.47 - 39.6865 I,
- y15 -> -41.4647 - 2281.26 I, x16 -> 3248.85 - 38.4293 I,
- y16 -> -42.7283 - 1420.33 I, x25 -> 4349.7 - 30.2944 I,
- y25 -> -51.8135 - 496.804 I, x26 -> 4337.53 + 158.762 I,
- y26 -> -260.129 - 507.848 I}, {x15 -> 2383.47 + 39.6865 I,
- y15 -> -41.4647 + 2281.26 I, x16 -> 3248.85 + 38.4293 I,
- y16 -> -42.7283 + 1420.33 I, x25 -> 4349.7 + 30.2944 I,
- y25 -> -51.8135 + 496.804 I, x26 -> 4337.53 - 158.762 I,
- y26 -> -260.129 + 507.848 I}, {x15 -> 2383.47 + 39.6865 I,
- y15 -> 41.4647 - 2281.26 I, x16 -> 3248.85 + 38.4293 I,
- y16 -> 42.7283 - 1420.33 I, x25 -> 4349.7 + 30.2944 I,
- y25 -> 51.8135 - 496.804 I, x26 -> 4337.53 - 158.762 I,
- y26 -> 260.129 - 507.848 I}, {x15 -> 2383.47 - 39.6865 I,
- y15 -> 41.4647 + 2281.26 I, x16 -> 3248.85 - 38.4293 I,
- y16 -> 42.7283 + 1420.33 I, x25 -> 4349.7 - 30.2944 I,
- y25 -> 51.8135 + 496.804 I, x26 -> 4337.53 + 158.762 I,
- y26 -> 260.129 + 507.848 I}, {x15 -> 1901.09 + 54.5518 I,
- y15 -> 58.5476 - 1771.35 I, x16 -> 2791.63 + 49.886 I,
- y16 -> 63.2361 - 885.13 I, x25 -> 4303.55 - 198.529 I,
- y25 -> 327.823 + 486.632 I, x26 -> 4318.56 + 42.1874 I,
- y26 -> 71.7032 + 500.737 I}, {x15 -> 1901.09 - 54.5518 I,
- y15 -> 58.5476 + 1771.35 I, x16 -> 2791.63 - 49.886 I,
- y16 -> 63.2361 + 885.13 I, x25 -> 4303.55 + 198.529 I,
- y25 -> 327.823 - 486.632 I, x26 -> 4318.56 - 42.1874 I,
- y26 -> 71.7032 - 500.737 I}, {x15 -> 1901.09 - 54.5518 I,
- y15 -> -58.5476 - 1771.35 I, x16 -> 2791.63 - 49.886 I,
- y16 -> -63.2361 - 885.13 I, x25 -> 4303.55 + 198.529 I,
- y25 -> -327.823 + 486.632 I, x26 -> 4318.56 - 42.1874 I,
- y26 -> -71.7032 + 500.737 I}, {x15 -> 1901.09 + 54.5518 I,
- y15 -> -58.5476 + 1771.35 I, x16 -> 2791.63 + 49.886 I,
- y16 -> -63.2361 + 885.13 I, x25 -> 4303.55 - 198.529 I,
- y25 -> -327.823 - 486.632 I, x26 -> 4318.56 + 42.1874 I,
- y26 -> -71.7032 - 500.737 I}, {x15 -> 2383.47 - 39.6865 I,
- y15 -> -41.4647 - 2281.26 I, x16 -> 732.841 + 0.694023 I,
- y16 -> -1.02717 - 632.954 I, x25 -> 4349.7 - 30.2944 I,
- y25 -> -51.8135 - 496.804 I, x26 -> 4337.53 + 158.762 I,
- y26 -> -260.129 - 507.848 I}, {x15 -> 2383.47 + 39.6865 I,
- y15 -> -41.4647 + 2281.26 I, x16 -> 732.841 - 0.694023 I,
- y16 -> -1.02717 + 632.954 I, x25 -> 4349.7 + 30.2944 I,
- y25 -> -51.8135 + 496.804 I, x26 -> 4337.53 - 158.762 I,
- y26 -> -260.129 + 507.848 I}, {x15 -> 2383.47 + 39.6865 I,
- y15 -> 41.4647 - 2281.26 I, x16 -> 732.841 - 0.694023 I,
- y16 -> 1.02717 - 632.954 I, x25 -> 4349.7 + 30.2944 I,
- y25 -> 51.8135 - 496.804 I, x26 -> 4337.53 - 158.762 I,
- y26 -> 260.129 - 507.848 I}, {x15 -> 2383.47 - 39.6865 I,
- y15 -> 41.4647 + 2281.26 I, x16 -> 732.841 + 0.694023 I,
- y16 -> 1.02717 + 632.954 I, x25 -> 4349.7 - 30.2944 I,
- y25 -> 51.8135 + 496.804 I, x26 -> 4337.53 + 158.762 I,
- y26 -> 260.129 + 507.848 I}, {x15 -> 1901.09 + 54.5518 I,
- y15 -> 58.5476 - 1771.35 I, x16 -> 743.502 - 1.5334 I,
- y16 -> 2.3014 - 617.068 I, x25 -> 4303.55 - 198.529 I,
- y25 -> 327.823 + 486.632 I, x26 -> 4318.56 + 42.1874 I,
- y26 -> 71.7032 + 500.737 I}, {x15 -> 1901.09 - 54.5518 I,
- y15 -> 58.5476 + 1771.35 I, x16 -> 743.502 + 1.5334 I,
- y16 -> 2.3014 + 617.068 I, x25 -> 4303.55 + 198.529 I,
- y25 -> 327.823 - 486.632 I, x26 -> 4318.56 - 42.1874 I,
- y26 -> 71.7032 - 500.737 I}, {x15 -> 1901.09 - 54.5518 I,
- y15 -> -58.5476 - 1771.35 I, x16 -> 743.502 + 1.5334 I,
- y16 -> -2.3014 - 617.068 I, x25 -> 4303.55 + 198.529 I,
- y25 -> -327.823 + 486.632 I, x26 -> 4318.56 - 42.1874 I,
- y26 -> -71.7032 + 500.737 I}, {x15 -> 1901.09 + 54.5518 I,
- y15 -> -58.5476 + 1771.35 I, x16 -> 743.502 - 1.5334 I,
- y16 -> -2.3014 + 617.068 I, x25 -> 4303.55 - 198.529 I,
- y25 -> -327.823 - 486.632 I, x26 -> 4318.56 + 42.1874 I,
- y26 -> -71.7032 - 500.737 I}}
- Out[26]= 24
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