A\b doesn't work

I have a problem in working with the matrix.

This is my script:

A=[0 0 0 0 0 0; 2.05^4 2.05^3 2.05^2 0 0 0; 3.1^4 3.1^3 3.1^2 0 0 0; 4.8^4 4.8^3 4.8^2 0 0 0; 5.6^4 5.6^3 5.6^2 0 0 0; 6.8 ^4 6.8^3 6.8^2 0 0 0]

b=[0 2.47 6.1 18.3 27.4 36.6]

x=A\b

This is the error messsage I get from Matlab:

??? Error using ==> mldivide Matrix dimensions must agree.

Error in ==> nad at 3 x=A\b

How I can solve this problem?

Thanks You very much.

[Image Analyst]

Original question in case he deletes it like he's done with others.

I have a problem in working with the matrix.

This is my script:

A=[0 0 0 0 0 0; 2.05^4 2.05^3 2.05^2 0 0 0; 3.1^4 3.1^3 3.1^2 0 0 0; 4.8^4 4.8^3 4.8^2 0 0 0; 5.6^4 5.6^3 5.6^2 0 0 0; 6.8 ^4 6.8^3 6.8^2 0 0 0]

b=[0 2.47 6.1 18.3 27.4 36.6]

x=A\b

This is the error messsage I get from Matlab:

??? Error using ==> mldivide Matrix dimensions must agree.

Error in ==> nad at 3 x=A\b

How I can solve this problem?

Thanks You very much.

Answer 1

[Azzi Abdelmalek]

b is a column vector

b=b'
x=A\b