空间点A(-5,2, 4)关于z轴的对称点为( )
A: (5,2, 4)
B: (0,0, 4)
C: (-5,2, - 4)
D: (5,-2, 4)
A: (5,2, 4)
B: (0,0, 4)
C: (-5,2, - 4)
D: (5,-2, 4)
举一反三
- 【单选题】如图示代码,下面哪个是正确的输出结果 A. 0 1 2 3 4 5 B. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 C. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 D. 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5
- 序列{(2),-1,2,0}与序列{(2),3,-5,2}相乘为() A: {(4),-3,-10,0} B: {4,(2),-3,2} C: {(2),-1,2,0} D: {(2),3,-5,2}
- 序列{(2),-1,2,0}与序列{(2),3,-5,2}相加为() A: {(4),2,-3,2} B: {4,(2),-3,2} C: {(2),-1,2,0} D: {(2),3,-5,2}
- 下列各式中,积为正数的是() A: 2×3×(-4)×5 B: 2×(-3)×(-4)×(-5) C: (-2)×0×(-4)×(-5) D: (-2)×(-3)×(-4)×(-5)
- 【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]