MATLAB Answers

Error in equation/variables

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Afnan Mussa
Afnan Mussa on 2 Apr 2021
Commented: Image Analyst on 3 Apr 2021
I'm facing a small problem in MATLAB, this code I wrote is not running due to an error in line 11 (the first equation in the image attached below).
I am not sure if i should write a0 in global or not, a0 is constant and equals 1.
How can I fix this error?
here is the code
and these are the errors
  1 Comment
Afnan Mussa
Afnan Mussa on 2 Apr 2021
Thank you all.
I am still having an error in teh dispaly figure line

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Answers (3)

Image Analyst
Image Analyst on 2 Apr 2021
Theta is a vector so you need to decide if you want to do Theta(1)^2, Theta(2)^2 or Theta.^2 (using a dot).
  3 Comments
Image Analyst
Image Analyst on 3 Apr 2021
And next time, if you post actual code rather than an image of it, we can fix it for you.

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Sulaymon Eshkabilov
Sulaymon Eshkabilov on 2 Apr 2021
% You need to perform elementwise operation. Since Theta = [0, 120]
Theta^2 % must be
Theta.^2
. % missing before / operator
Good luck

Jacob Forbes
Jacob Forbes on 2 Apr 2021
Writing a0 into global shouldn't be your issue as you said it is a constant and you have it defined as 1. From what I see, the problem you're running into is you are trying to take the square of a vector (Theta) which cannot be done unless it is done element by element, in which case you would use the operator ".^2" after (Theta) instead of "(Theta)^2" like you currently have written.

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