MATLAB Homework

Can someone help me with this homework? I'm extremely new to MATLAB and have no idea how to do this.

1)Solve the equation Ax=b and answer the following questions

Where A=[1 2 3 4; 4 2 3 1; 4 3 1 5; 4 3 2 5]

b=[1; 2; 3; 4]

      a)What are the dimensions of the x vector?
      b)What is the solution vector?

2)Using the same A calculate A-transpose

     a)What are the dimensions of A-transpose?
     b) What i the A-transpose vector?

THANK YOU!

[Jan]

Reading the Getting Started chapters of the documentation is a good idea. All necessary basics are explained there.

Answer 1

[Image Analyst]

Hint: look up the size() function. And I'm sure if you looked up transpose in the help you'd find the apostrophe operator. A transposed would be another array, not a vector.

[Sean de Wolski]

and mrdivide to find the size of x

Answer 2

[Rushi Auti]

A=[1 2 3 4; 4 2 3 1; 4 3 1 5; 4 3 2 5];
b=[1; 2; 3; 4];
x = b/A
size(x)
P = A';