arbitrary symbolic functions - Symbolic math toolbox

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Maria Perdomo 2013-6-21

I have an equation:

M = A sin(x(t));

and would like to find: dM/dt

is it possible to create symbolic functions without definition? for x(t) I dont have a definition. But I require:

diff(M,t).

How can an arbitrary symbolic function be declared??

Walter Roberson 2013-6-21

A = 9/13;   %arbitrary
syms x(t)
M = A * sin(x(t));
diff(M,t)

Maria Perdomo 2013-6-21

2010b. I'll try a newer version. Thanks!

Maria Perdomo 2013-6-21

yep it is, 2012a works.

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