• 2022-06-29
    求解线性方程组[img=226x71]18030731c3dbe55.png[/img]应使用的语句是
    A: A={{2,3,9},{7,5,2},{3,2,1},{1,2,7}}; B={6,4,2};LinearSolve[A,B]+NullSpace[A][[1]]s+NullSpace[A][[2]]t
    B: A={{2,7,3,1},{3,5,2,2},{9,4,1,7}}; B={6,4,2}; LinearSolve[A,B]+NullSpace[A][[All,1]]s+NullSpace[A][[All,2]]t
    C: A={{2,7,3,1},{3,5,2,2},{9,4,1,7}}; B={6,4,2}; LinearSolve[A,B]+NullSpace[A][[1]]s+NullSpace[A][[2]]t
    D: A={{2,7,3,1},{3,5,2,2},{9,4,1,7}}; B={6,4,2}; LinearSolve[A,B]+NullSpace[A].{s,t}
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