A problem of a Matlab programme

[neptunecs]

Hi,I have a problem in Matlab programme,I want to calculate the derivative of a expression by matlab,but there are some abstract functions in that expression.
for example:f=R(t)*cos(t),I want calculate d=diff(f,t),but I don't know how to deal with the abstract function R(t),I hope I can get this kind of result:d=dRt*cos(t)-R*sin(t),but how should I design the programme?
thank you for your help.
neptunecs.

 

[chroot]

Matlab does not do symbolic calculations, without the Symbolic Math Toolbox installed. Do you have that?

- Warren

 

[neptunecs]

Matlab does not do symbolic calculations, without the Symbolic Math Toolbox installed. Do you have that?

- Warren

Thank you.
I find that I have the Symbolic Math Toolbox installed,I will have a try soon.

 

[neptunecs]

I doubt that the Symbolic Math Toolbox is installed,and I doubt that Toolbox can solve my problem

 

[neptunecs]

I doubt that the Symbolic Math Toolbox is installed,and I doubt that Toolbox can solve my problem

https://www.physicsforums.com/attachment.php?attachmentid=7298&stc=1&d=1152433684