The Normal Equation and QR My Solutions

% discretize t on [-2,2] with h=0.01 (as a column vector)

How can I do that?

[David Goodmanson]

Hello Doga,

How is the title of your question related to the question?

[Doga Ersuz]

This is my homework for the normal equation and QR , and this is the first thing that I have to cover.

You can take a look. Thanks in advance.

[Torsten]

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

[Steven Lord]

This sounds like a homework assignment. If it is, show us the code you've written to try to solve the problem and ask a specific question about where you're having difficulty and we may be able to provide some guidance.

If you aren't sure where to start because you're not familiar with how to write MATLAB code, I suggest you start with the free MATLAB Onramp tutorial to quickly learn the essentials of MATLAB.

If you aren't sure where to start because you're not familiar with the mathematics you'll need to solve the problem, I recommend asking your professor and/or teaching assistant for help.

[Doga Ersuz]

Thanks for your interest and answer. I'm doing [-2:0.01:2] or (-2:0.01:2)' to create a column vector but it gives error. I'm struggling to understand my mistake.

[Torsten]

Works for me.

t = (-2:0.01:2)'

t = 401×1

-2.0000 -1.9900 -1.9800 -1.9700 -1.9600 -1.9500 -1.9400 -1.9300 -1.9200 -1.9100

Answer 1

[William Rose]

@Doga Ersuz, It looks like your professor has provided a partial script in which you must fill in the right hand side on lines 6, 10, and 12. Hints: Line 6 should create a vector that is 401x1 (rows by columns). @Torsten's hint is the key for line 6. Line 10 should create a 401x5 matrix. Line 12 should create a 5x1 vector. You do not need a for loop for any of these lines, which is one of the nice things about Matlab. Line 15 of the script looks like a mistake, for several reasons.

[Doga Ersuz]

Thanks for your answer.

[William Rose]

@Doga Ersuz, you;re welcome, and good luck with your work.