Question: if you only hand out the answer and dont explain...
If you only hand out the answer and don't explain . I will report as trash
(1). Please tell me how to form this to be a matrix form (x1,x1+x2, x1+x2+x3) why is not this matrix?
(2) please turn this basis to be the matrix form [1,x,x^2] why this one is correct i am so confused