初值问题化为与之等价的一阶方程组的初值问题: [tex=15.5x1.429]uDURn6KTVSzuxHB9PQPJUguPuD4Rb9vzPt996AXjhLQcpTOx4V3xJN9B7opmH2KdD3XXRPBwWd/CIQMK24tnqNWR1OrDzbY0uHYwufzmpJqFPjXCDOwFZ+OUTUpOFYZ0[/tex]
举一反三
- 【计算题】5 ×8= 6×4= 7×7= 9×5= 2×3= 9 ×2= 8×9= 7×8= 5×5= 4×3= 5+8= 6 ×6= 3×7= 4×8= 9×3= 1 ×2= 9×9= 6×8= 8×0= 4×7=
- >>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']
- 将下面的初值问题化为与之等价的一阶方程组的初值问题：[tex=7.357x1.286]uDURn6KTVSzuxHB9PQPJUguPuD4Rb9vzPt996AXjhLRVDjeSKRuDw76rEH1xD9HQ[/tex]，[tex=7.714x1.429]x+PIDg98PAFlB18FksDAuJKKy9Fl+AhnRgm2CY6o1m4=[/tex].
- 将初值问题化为与之等价的一阶方程组的初值问题: [tex=13.214x1.571]76JSnBIi1Gjd8oSh5JULecPB6cdeq1FM+7jx9DhC+1s/5tqJ5zFbwGbTFSU0u4/N+6e8z9NFFtd+Rca3cDpGmQ==[/tex] [tex=7.786x1.429]5N4fE/+TRNVJnPQE2QZxnqsT5mmVL9zzGTKkQrxX1C3MPzRZ5ycnnv7kXgJ/kaD8kkrB3CXxTaTd+DbPMhmbxw==[/tex]
- 【单选题】Which of the following matrices does not have the same determinant of matrix B: [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -1, 0, -9,-5] A. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 0; -1, 0, -9, -5] B. [1, 3, 0, 2; -2, -5, 7, 4; 1, 0, 9, 5; -1, 0, -9, -5] C. [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -3, -5, -2, -1] D. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 1; -1, 0, -9, -5]