![](https://img.laitimes.com/img/9ZDMuAjOiMmIsIjOiQnIsISPrdEZwZ1Rh5WNXp1bwNjW1ZUba9VZwlHdsATOfd3bkFGazxCMx8VesATMfhHLlN3XnxCMwEzX0xiRGZkRGZ0Xy9GbvNGLpZTY1EmMZVDUSFTU4VFRR9Fd4VGdsYTMfVmepNHLrJXYtJXZ0F2dvwVZnFWbp1zczV2YvJHctM3cv1Ce-cmbw5SNjlzM0MzY0UGMwgjM1EGZiN2Y3QTYhVWYidTOyQWOi9CXxAzLchDMxIDMy8CXn9Gbi9CXzV2Zh1WavwVbvNmLvR3YxUjL0M3Lc9CX6MHc0RHaiojIsJye.png)
>> A1=[2,3,1;1,4,3;3,1,2]
A1 =
2 3 1
1 4 3
3 1 2
>>
>>
>> b=[22;26;28]
b =
22
26
28
>>
>>
>> rref([A1,b])
ans =
1 0 0 6
0 1 0 2
0 0 1 4
>>