Error using * Incorrect dimensions

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Leia Troop
Leia Troop 2021-10-18
回答： Bjorn Gustavsson 2021-10-19
I am trying to do least squares fitting for a homework assignment
I have included my code and related workspace as an attachment. I am having issues with line 8. I have fiddled with the code but haven't found a solution.
(also I know I don't need the n variable its just there for now)
an explanation of what is wrong and how to solve would be very much appreciated. Thank you!

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Bjorn Gustavsson
Bjorn Gustavsson 2021-10-19
For problems like these you should learn to run the code line-by-line at the command-line prompt. Then check the size and type of the resulting variables, using size(X) and whos X for example. Also check which combinations of transposes makes your multiplications work and what shapes of the matrices are.
HTH

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