MATLAB Answers

Invalid use of operator

38 views (last 30 days)
Maria Mamai
Maria Mamai on 24 Sep 2021 at 18:12
Commented: Maria Mamai on 24 Sep 2021 at 19:34
I try to make the graph of this equation:
I(a) = a^6 * (K1 *K3 - K2^2)
where
a = [0,5,100]
K1 = besselk(1,a)
K3 = besselk(3,a)
K2 = besselk(2,a)
my code is
I = (a.^6)*(K1.*K3.-K22.)
and I get "invalide use of operator" for (-) symbol. I can not understand why. Can please anyone help?

Answers (1)

Fangjun Jiang
Fangjun Jiang on 24 Sep 2021 at 18:24
There is a difference between operator "*" and ".*". But there is no such an operator as ".-" in MATLAB.
  3 Comments
Maria Mamai
Maria Mamai on 24 Sep 2021 at 19:34
Thank you very much!

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by