Bt

  • November 2019
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BAØI TAÄP HEÄ PHÖÔNG TRÌNH TUYEÁN TÍNH -----*----B/ GIAÛI CAÙC HEÄ PHÖÔNG TRÌNH TUYEÁN TÍNH THUAÀN NHAÁT SAU :  2 x1  x2  4 x3  0  a /  3 x1  5 x2  7 x3  0  4 x  5x  6 x  0 2 3  1  2 x1  x2  5 x3  7 x4  0  b /  4 x1  2 x2  7 x3  5 x4  0  2x  x  x  5x  0 4  1 2 3  3 x1  2 x2  5 x3  2 x4  7 x5  0  6 x  4 x  7 x  4 x  5 x  0  1 2 3 4 5

c/ 

 3 x1  2 x2  x3  2 x4  11x5  0  6 x1  4 x2  x3  4 x4  13x5  0

 6 x1  2 x2  3x3  4 x4  9 x5  0  3x  x  2 x  6 x  3x  0  1 2 3 4 5

d/ 

 6 x1  2 x2  5 x3  20 x4  3 x5  0  9 x1  3 x2  4 x3  2 x4  15 x5  0

e/ 

 2 x1  7 x2  4 x3  5 x4  8 x5  0  4 x  4 x  8x  5x  4 x  0  1 2 3 4 5  x1  9 x2  3 x3  5 x4  14 x5  0  3 x1  5 x2  7 x3  5 x4  6 x5  0

 2 x1  3 x2  x3  5 x4  0  3x  2 x  2 x  7 x  0  1 2 3 4

f/

 4 x1  x2  3 x3  6 x4  0  x1  2 x2  4 x3  7 x4  0

 3x1  4 x2  5 x3  7 x4  0  2 x  3x  3 x  2 x  0  1 2 3 4

g/ 

 4 x1  11x2  13 x3  16 x4  0  7 x1  2 x2  x3  3x4  0

 x1  2 x2  x3  x4  x5  0  2x  x  x  x  x  0  1 2 3 4 5

h/ 

 x1  7 x2  5 x3  5 x4  5 x5  0  3x1  x2  2 x3  x4  x5  0

 3 x1  x2  x3  2 x4  x5  0  x  x  2 x  4 x  5x  0  1 2 3 4 5

i/ 

 x1  x2  3 x3  6 x4  9 x5  0  12 x1  2 x2  x3  2 x4  10 x5  0  6 x1  3x2  4 x3  3 x4  0  3x  2 x  3 x  0  1 3 5

j/ 

 9 x1  3x2  6 x3  3x4  3 x5  0  12 x1  6 x2  8 x3  6 x4  0

k/ 

 2 x1  4 x2  5 x3  3 x4  0  3x  6 x  4 x  2 x  0  1 2 3 4  4 x1  8 x2  17 x3  11x4  0  6 x1  12 x2  8 x3  4 x4  0

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