我是电子信息工程专业的学生,我们学习这门课,这是我们老师让做的题,希望对你有所帮助。
-10 30 16 -10 51 21 125 328 180 >> A.*B ans =
-8 15 -4 0 35 24 -9 122 0 >> B*A ans =
-11 0 49 7 228 69 3 -1 4 (3)>> A/B
ans =
-0.3936 1.2021 0.0851 -0.9468 2.3511 -0.9574
4.6170 3.8723 13.8936 >> B\A
ans =
-0.5106 -8.6170 -0.6170 0.7340 17.5745 2.5745 -0.8830 -21.2128 -1.2128 (4)>> [A,B] ans =
-1 5 4 8 3 -1 0 7 8 2 5 3 3 61 7 -3 2 0 >> [A([1,3],:);B^2] ans =
-1 5 4 3 61 7 73 37 1 17 37 13 -20 1 9 3、已知
>> A=[23,10,-0.778,0;41,-45,65,5;32,5,0,32;6,-9.54,54,3.14] A =
23.0000 10.0000 -0.7780 0 41.0000 -45.0000 65.0000 5.0000 32.0000 5.0000 0 32.0000 6.0000 -9.5400 54.0000 3.1400 (1)>> A(find(A>=10&A<=25)) ans =