Hi everyone! How do i want to plot graph the graph for this values?

>> A = [1 1 ; -1 3 ]
A = 1     1
     -1     3
 
>> B = [ 7 ; 1 ]
B =7
     1
 
>> AB = [ A B ]
AB = 1     1     7
         -1     3     1
 
>> rref(AB)
 
ans =1     0     5
          0     1     2

[Walter Roberson]

?

What would you plot? What are your X coordinates? What are you Y coordinates? Do you want a line plot? A point plot? A surface?

[Levi]

oh I am sorry . My x= 5 and y = 2.. I have try using plot(x,y) but nothing appear. A graph without line emerge.

Answer 1

[Stephan]

To plot single points use scatter:

x = 5
y = 2
scatter(x,y)

plot can not visualize single points, but vectors:

x = 5:10
y = 2:2:12
plot(x,y)

[Levi]

Thanks a lot sir. But can you kindly explain what does number after x = 5 (which is 10) respresent? Same goes to y = :2 (which is 2 : 12 ) that have 2 digits after it?

[Stephan]

Have a read here:

https://de.mathworks.com/help/matlab/ref/colon.html