Kindly tell me if the code (MTPA) is wrong for calculating MTPA curve

I wish to get the Id and Iq current from the MPTA curve which I am attaching below and also the the code is attached for reference.

Answer 1

[Walter Roberson]

MATLAB does not use 'RIGHT SINGLE QUOTATION MARK' (U+2019) ’ character: it uses apostrophe U+0027 '

0+char("'")

ans = 39

0+char("’")

ans = 8217

[Varun Nair]

Thanks Walter for your reply, I did not get where should I put them in the last line. Can you please tell me