How to enter a function into MATLAB

2 次查看(过去 30 天)
Hello good day,
I am having issues on how to enter this equation into MATLAB.
I have it as
H/2 * cos(k*x)*cos(sigma*t)
but getting a different answer from my calculator
Thank you

回答(1 个)

Steven Lord
Steven Lord 2020-9-17
Is your calculator computing the cosine of angles in degrees (which in MATLAB is the cosd function) or in radians (cos)?
  2 个评论
Nicholas Deosaran
Nicholas Deosaran 2020-9-17
I did it in radians and degrees and got different answers.
Am I tryping out the code corretly in MATLAB?
I don't know if I need to put the .* in the function.
Walter Roberson
Walter Roberson 2020-9-17
If your inputs are all scalars then you can use either * or .*
If your inputs are not scalars, then you need .*

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