Problem, when trying to differentate sin(f(x)), with variable x
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Andy
am 26 Apr. 2014
Kommentiert: Azzi Abdelmalek
am 27 Apr. 2014
Hello!
I would like to try some basic functions in Matlab. I faced two problems, which seems unable to solve for me.
If I type:
a=sin(3*x)
b=diff(a,x)
Then I run it:
a=sin(3*x)(3*x)
b=3*D(sin(3*x))(3*x)
I think it should be:
a=sin(3*x)
b=3*cos(3*x)
Please tell me what is wrong with my little code! Thank you!
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Walter Roberson
am 27 Apr. 2014
I think maybe you had something in your workspace that was interfering. Did you try clearing all variables, or restarting MATLAB?
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