直线x-1=0与直线y=5的交点坐标是( )
A: (1,5)
B: (3,5)
C: (5,5)
D: (7,5)
A: (1,5)
B: (3,5)
C: (5,5)
D: (7,5)
举一反三
- 直线x-1=0与直线y=5的交点坐标是() A: (-1,-5) B: (1,5) C: (-1,5) D: (1,-5)
- 下列哪条语句是正确的( ) A: A=[1 2;3 4];B=[3;7];A.*B; B: A=cell(2,3);A(1,2)=[4;5]; C: A=[2 3 5 7;9 4 6 1;7 3 2 5];B=[1 7;0 5];A(2:end,2:2:end) D: x=-5:5;y=-5:5;z=x.*x-y.*y;surf(x,y,z);
- intx=5,y=8,z=7;表达式z=!(x>y)||(x=1,y=3)计算后的结果 A: x=1,y=3,z=1 B: x=1,y=3,z=0 C: x=5,y=8,z=0 D: x=5,y=8,z=1
- 【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]
- 下列MATLAB语句运行有误的是() A: A=[1 2;3 4];B=[3;7];AB B: A=ones(3,3);A(1,2:3)=[4,5] C: A=[2 3 5 7;9 4 6 1;7 3 2 5];B=[1 7;0 5];A(2:end,2:2:end)>B D: x=-5:5;y=-5:5;z=xx-yy