Question: Simplification of a function of 2 variables into f(x)*y

When solving a nonlinear differential equation on some variable x, but using some other parameter w, I am finding on Maple some complicated solution, which I would like to simplify by making evident what is the x dependence, and where I can compact complicated functions of the parameter w alone into new constants. How can I do that automatically?

 

For example, to have

 

(sinh(w) + ln(w))*x 

 

to be automatically called

 

c*x

 

Thank you in advance.

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