Question: Symbolic Computations

I am trying to integrate an equation that has a cos(x), sin(x), cosh(x), sinh(x).  When I enter the equation in Maple and try to integrate the equation Maple just rewrites the equation without actually solving the equation.  I am not sure if I have to load a specific package to complete the integration.  Here is the equation:

H:= (cos(n*L)=cosh(n*L))/(sin(n*L)-sinh(n*L))


when I write: int(phi(x), x=0..L)

maple just puts the integration symbol in front of the above equation but doesn't actually solve the integration.  Does anyone know how to get Maple to actually compute this integration?  Thanks, Tom


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